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57902431 = 2310392423
BaseRepresentation
bin1101110011100…
…0010101011111
311000221202012111
43130320111133
5104310334211
65425014451
71302106516
oct334702537
9130852174
1057902431
112a758a54
1217484427
13bcc42c2
14799367d
15513b421
hex373855f

57902431 has 8 divisors (see below), whose sum is σ = 60503040. Its totient is φ = 55308792.

The previous prime is 57902401. The next prime is 57902441. The reversal of 57902431 is 13420975.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57902431 - 25 = 57902399 is a prime.

It is a super-2 number, since 2×579024312 = 6705383031419522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57902393 and 57902402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57902401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22686 + ... + 25108.

It is an arithmetic number, because the mean of its divisors is an integer number (7562880).

Almost surely, 257902431 is an apocalyptic number.

57902431 is a deficient number, since it is larger than the sum of its proper divisors (2600609).

57902431 is a wasteful number, since it uses less digits than its factorization.

57902431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3485.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 57902431 is about 7609.3646909581. The cubic root of 57902431 is about 386.8704861659.

The spelling of 57902431 in words is "fifty-seven million, nine hundred two thousand, four hundred thirty-one".

Divisors: 1 23 1039 2423 23897 55729 2517497 57902431