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57456430 = 25171372467
BaseRepresentation
bin1101101100101…
…1011100101110
311000010002101221
43123023130232
5104202101210
65411253554
71265241313
oct333133456
9130102357
1057456430
112a483959
12172aa2ba
13bb992b5
1478b8d0a
15509e1da
hex36cb72e

57456430 has 32 divisors (see below), whose sum is σ = 110349216. Its totient is φ = 21464064.

The previous prime is 57456397. The next prime is 57456431. The reversal of 57456430 is 3465475.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57456431) 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, 22057 + ... + 24523.

It is an arithmetic number, because the mean of its divisors is an integer number (3448413).

Almost surely, 257456430 is an apocalyptic number.

57456430 is a deficient number, since it is larger than the sum of its proper divisors (52892786).

57456430 is a wasteful number, since it uses less digits than its factorization.

57456430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628.

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 57456430 is about 7580.0019788916. The cubic root of 57456430 is about 385.8746181049.

The spelling of 57456430 in words is "fifty-seven million, four hundred fifty-six thousand, four hundred thirty".

Divisors: 1 2 5 10 17 34 85 137 170 274 685 1370 2329 2467 4658 4934 11645 12335 23290 24670 41939 83878 209695 337979 419390 675958 1689895 3379790 5745643 11491286 28728215 57456430