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72579052 = 227131737317
BaseRepresentation
bin1000101001101…
…11011111101100
312001120101202001
410110313133230
5122040012202
611111342044
71540624510
oct424673754
9161511661
1072579052
1137a72797
1220381924
13120626b0
1498d4140
156589d87
hex45377ec

72579052 has 96 divisors (see below), whose sum is σ = 170529408. Its totient is φ = 26210304.

The previous prime is 72579041. The next prime is 72579077. The reversal of 72579052 is 25097527.

It is a super-4 number, since 4×725790524 (a number of 33 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 228798 + ... + 229114.

It is an arithmetic number, because the mean of its divisors is an integer number (1776348).

Almost surely, 272579052 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 72579052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85264704).

72579052 is an abundant number, since it is smaller than the sum of its proper divisors (97950356).

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

72579052 is a wasteful number, since it uses less digits than its factorization.

72579052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 72579052 is about 8519.3340115293. The cubic root of 72579052 is about 417.1290443245.

The spelling of 72579052 in words is "seventy-two million, five hundred seventy-nine thousand, fifty-two".

Divisors: 1 2 4 7 13 14 17 26 28 34 37 52 68 74 91 119 148 182 221 238 259 317 364 442 476 481 518 629 634 884 962 1036 1258 1268 1547 1924 2219 2516 3094 3367 4121 4403 4438 5389 6188 6734 8177 8242 8806 8876 10778 11729 13468 16354 16484 17612 21556 23458 28847 32708 37723 46916 57239 57694 70057 75446 82103 114478 115388 140114 150892 152477 164206 199393 228956 280228 304954 328412 398786 490399 609908 797572 980798 1067339 1395751 1961596 2134678 2592109 2791502 4269356 5184218 5583004 10368436 18144763 36289526 72579052