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57994638 = 23132332327
BaseRepresentation
bin1101110100111…
…0110110001110
311001010102200120
43131032312032
5104321312023
65431005410
71302642402
oct335166616
9131112616
1057994638
112a811259
1217509866
13c027270
1479b9102
1551588e3
hex374ed8e

57994638 has 32 divisors (see below), whose sum is σ = 130346496. Its totient is φ = 17068128.

The previous prime is 57994627. The next prime is 57994639. The reversal of 57994638 is 83649975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57994639) 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, 14370 + ... + 17957.

It is an arithmetic number, because the mean of its divisors is an integer number (4073328).

Almost surely, 257994638 is an apocalyptic number.

57994638 is an abundant number, since it is smaller than the sum of its proper divisors (72351858).

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

57994638 is a wasteful number, since it uses less digits than its factorization.

57994638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32368.

The product of its digits is 1632960, while the sum is 51.

The square root of 57994638 is about 7615.4210651808. The cubic root of 57994638 is about 387.0757351661.

The spelling of 57994638 in words is "fifty-seven million, nine hundred ninety-four thousand, six hundred thirty-eight".

Divisors: 1 2 3 6 13 23 26 39 46 69 78 138 299 598 897 1794 32327 64654 96981 193962 420251 743521 840502 1260753 1487042 2230563 2521506 4461126 9665773 19331546 28997319 57994638