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53761480 = 23517173457
BaseRepresentation
bin1100110100010…
…1010111001000
310202011100212221
43031011113020
5102230331410
65200143424
71221652003
oct315052710
9122140787
1053761480
112838a883
1216007b74
13b1a4536
1471d653a
154abe4da
hex33455c8

53761480 has 64 divisors (see below), whose sum is σ = 129101040. Its totient is φ = 20078592.

The previous prime is 53761459. The next prime is 53761489. The reversal of 53761480 is 8416735.

It can be written as a sum of positive squares in 8 ways, for example, as 50098084 + 3663396 = 7078^2 + 1914^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (53761489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117412 + ... + 117868.

Almost surely, 253761480 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 53761480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64550520).

53761480 is an abundant number, since it is smaller than the sum of its proper divisors (75339560).

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

53761480 is a wasteful number, since it uses less digits than its factorization.

53761480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 53761480 is about 7332.2220370090. Note that the first 3 decimals coincide. The cubic root of 53761480 is about 377.4189817800.

The spelling of 53761480 in words is "fifty-three million, seven hundred sixty-one thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 17 20 34 40 68 85 136 170 173 340 346 457 680 692 865 914 1384 1730 1828 2285 2941 3460 3656 4570 5882 6920 7769 9140 11764 14705 15538 18280 23528 29410 31076 38845 58820 62152 77690 79061 117640 155380 158122 310760 316244 395305 632488 790610 1344037 1581220 2688074 3162440 5376148 6720185 10752296 13440370 26880740 53761480