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53834144 = 25721319139
BaseRepresentation
bin1100110101011…
…1000110100000
310202022001120012
43031113012200
5102240143034
65201504052
71222403600
oct315270640
9122261505
1053834144
112842a431
1216042028
13b1cb630
147214c00
154ad5cce
hex33571a0

53834144 has 144 divisors (see below), whose sum is σ = 140767200. Its totient is φ = 20030976.

The previous prime is 53834141. The next prime is 53834159. The reversal of 53834144 is 44143835.

It is a Harshad number since it is a multiple of its sum of digits (32).

Its product of digits (23040) is a multiple of the sum of its prime divisors (180).

It is a self number, because there is not a number n which added to its sum of digits gives 53834144.

It is not an unprimeable number, because it can be changed into a prime (53834141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 387227 + ... + 387365.

It is an arithmetic number, because the mean of its divisors is an integer number (977550).

Almost surely, 253834144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53834144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70383600).

53834144 is an abundant number, since it is smaller than the sum of its proper divisors (86933056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53834144 is a wasteful number, since it uses less digits than its factorization.

53834144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 180 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 53834144 is about 7337.1754783431. The cubic root of 53834144 is about 377.5889450225.

Adding to 53834144 its reverse (44143835), we get a palindrome (97977979).

The spelling of 53834144 in words is "fifty-three million, eight hundred thirty-four thousand, one hundred forty-four".

Divisors: 1 2 4 7 8 13 14 16 19 26 28 32 38 49 52 56 76 91 98 104 112 133 139 152 182 196 208 224 247 266 278 304 364 392 416 494 532 556 608 637 728 784 931 973 988 1064 1112 1274 1456 1568 1729 1807 1862 1946 1976 2128 2224 2548 2641 2912 3458 3614 3724 3892 3952 4256 4448 5096 5282 6811 6916 7228 7448 7784 7904 10192 10564 12103 12649 13622 13832 14456 14896 15568 18487 20384 21128 24206 25298 27244 27664 28912 29792 31136 34333 36974 42256 48412 50596 54488 55328 57824 68666 73948 84512 88543 96824 101192 108976 129409 137332 147896 177086 193648 202384 217952 240331 258818 274664 295792 354172 387296 404768 480662 517636 549328 591584 708344 961324 1035272 1098656 1416688 1682317 1922648 2070544 2833376 3364634 3845296 4141088 6729268 7690592 13458536 26917072 53834144