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52788164 = 221113231229
BaseRepresentation
bin1100100101011…
…1101111000100
310200022220202012
43021113233010
5102003210124
65123233352
71210456232
oct311275704
9120286665
1052788164
1127885590
1215818858
13ac23500
147021952
15497ae0e
hex3257bc4

52788164 has 72 divisors (see below), whose sum is σ = 113137920. Its totient is φ = 21340800.

The previous prime is 52788163. The next prime is 52788173. The reversal of 52788164 is 46188725.

It is not an unprimeable number, because it can be changed into a prime (52788163) 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, 230402 + ... + 230630.

It is an arithmetic number, because the mean of its divisors is an integer number (1571360).

Almost surely, 252788164 is an apocalyptic number.

It is an amenable number.

52788164 is an abundant number, since it is smaller than the sum of its proper divisors (60349756).

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

52788164 is a wasteful number, since it uses less digits than its factorization.

52788164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 286 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 52788164 is about 7265.5463662412. The cubic root of 52788164 is about 375.1274565265.

The spelling of 52788164 in words is "fifty-two million, seven hundred eighty-eight thousand, one hundred sixty-four".

Divisors: 1 2 4 11 13 22 26 31 44 52 62 124 143 169 229 286 338 341 403 458 572 676 682 806 916 1364 1612 1859 2519 2977 3718 4433 5038 5239 5954 7099 7436 8866 10076 10478 11908 14198 17732 20956 28396 32747 38701 57629 65494 77402 78089 92287 115258 130988 154804 156178 184574 230516 312356 369148 425711 851422 1015157 1199731 1702844 2030314 2399462 4060628 4798924 13197041 26394082 52788164