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57398870 = 255739887
BaseRepresentation
bin1101101011110…
…1011001010110
311000000011110002
43122331121112
5104143230440
65410131302
71264611434
oct332753126
9130004402
1057398870
112a444691
1217280b32
13bb79039
1478a1d54
15508c115
hex36bd656

57398870 has 8 divisors (see below), whose sum is σ = 103317984. Its totient is φ = 22959544.

The previous prime is 57398843. The next prime is 57398881. The reversal of 57398870 is 7889375.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2869934 + ... + 2869953.

It is an arithmetic number, because the mean of its divisors is an integer number (12914748).

Almost surely, 257398870 is an apocalyptic number.

57398870 is a deficient number, since it is larger than the sum of its proper divisors (45919114).

57398870 is a wasteful number, since it uses less digits than its factorization.

57398870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5739894.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 57398870 is about 7576.2041947139. The cubic root of 57398870 is about 385.7457183216.

The spelling of 57398870 in words is "fifty-seven million, three hundred ninety-eight thousand, eight hundred seventy".

Divisors: 1 2 5 10 5739887 11479774 28699435 57398870