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57720577304 = 2313809686039
BaseRepresentation
bin110101110000011010…
…100001110100011000
312111222122110010122102
4311300122201310120
51421202431433204
642303320142532
74112240545325
oct656032416430
9174878403572
1057720577304
112252a841055
12b22a607a48
13559b43b170
142b17c5db4c
15177c59841e
hexd706a1d18

57720577304 has 32 divisors (see below), whose sum is σ = 116695404000. Its totient is φ = 26607297792.

The previous prime is 57720577303. The next prime is 57720577307. The reversal of 57720577304 is 40377502775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57720577303) 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, 258884 + ... + 427155.

It is an arithmetic number, because the mean of its divisors is an integer number (3646731375).

Almost surely, 257720577304 is an apocalyptic number.

It is an amenable number.

57720577304 is an abundant number, since it is smaller than the sum of its proper divisors (58974826696).

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

57720577304 is a wasteful number, since it uses less digits than its factorization.

57720577304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686867 (or 686863 counting only the distinct ones).

The product of its (nonzero) digits is 1440600, while the sum is 47.

The spelling of 57720577304 in words is "fifty-seven billion, seven hundred twenty million, five hundred seventy-seven thousand, three hundred four".

Divisors: 1 2 4 8 13 26 52 104 809 1618 3236 6472 10517 21034 42068 84136 686039 1372078 2744156 5488312 8918507 17837014 35674028 71348056 555005551 1110011102 2220022204 4440044408 7215072163 14430144326 28860288652 57720577304