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72874461 = 31117129901
BaseRepresentation
bin1000101011111…
…11100111011101
312002010101222010
410111333213131
5122123440321
611121541433
71543264662
oct425774735
9162111863
1072874461
1138154730
12204a4879
1312136caa
14996da69
1565e7676
hex457f9dd

72874461 has 16 divisors (see below), whose sum is σ = 112235328. Its totient is φ = 41568000.

The previous prime is 72874447. The next prime is 72874469. The reversal of 72874461 is 16447827.

It is not a de Polignac number, because 72874461 - 214 = 72858077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72874469) 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, 64390 + ... + 65511.

It is an arithmetic number, because the mean of its divisors is an integer number (7014708).

Almost surely, 272874461 is an apocalyptic number.

It is an amenable number.

72874461 is a deficient number, since it is larger than the sum of its proper divisors (39360867).

72874461 is a wasteful number, since it uses less digits than its factorization.

72874461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129932.

The product of its digits is 75264, while the sum is 39.

The square root of 72874461 is about 8536.6539697940. The cubic root of 72874461 is about 417.6942068018.

The spelling of 72874461 in words is "seventy-two million, eight hundred seventy-four thousand, four hundred sixty-one".

Divisors: 1 3 11 17 33 51 187 561 129901 389703 1428911 2208317 4286733 6624951 24291487 72874461