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52143144 = 23319412789
BaseRepresentation
bin1100011011101…
…0010000101000
310122010010221120
43012322100220
5101322040034
65101335240
71202131554
oct306722050
9118103846
1052143144
1127484a09
1215567520
13aa58a41
146cd4864
15489ec49
hex31ba428

52143144 has 64 divisors (see below), whose sum is σ = 140616000. Its totient is φ = 16058880.

The previous prime is 52143137. The next prime is 52143151. The reversal of 52143144 is 44134125.

It is an interprime number because it is at equal distance from previous prime (52143137) and next prime (52143151).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17302 + ... + 20090.

It is an arithmetic number, because the mean of its divisors is an integer number (2197125).

Almost surely, 252143144 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 52143144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70308000).

52143144 is an abundant number, since it is smaller than the sum of its proper divisors (88472856).

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

52143144 is a wasteful number, since it uses less digits than its factorization.

52143144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2858 (or 2854 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 52143144 is about 7221.0209804431. The cubic root of 52143144 is about 373.5932932904.

Adding to 52143144 its reverse (44134125), we get a palindrome (96277269).

The spelling of 52143144 in words is "fifty-two million, one hundred forty-three thousand, one hundred forty-four".

Divisors: 1 2 3 4 6 8 12 19 24 38 41 57 76 82 114 123 152 164 228 246 328 456 492 779 984 1558 2337 2789 3116 4674 5578 6232 8367 9348 11156 16734 18696 22312 33468 52991 66936 105982 114349 158973 211964 228698 317946 343047 423928 457396 635892 686094 914792 1271784 1372188 2172631 2744376 4345262 6517893 8690524 13035786 17381048 26071572 52143144