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57428758552 = 23112066331583
BaseRepresentation
bin110101011111000001…
…010101000000011000
312111020022100012120111
4311133001111000120
51420103230233202
642214333334104
74102065251644
oct653701250030
9174208305514
1057428758552
11223a0045330
12b168937334
135552b46149
142acb1b9c24
151761b536d7
hexd5f055018

57428758552 has 32 divisors (see below), whose sum is σ = 117477319680. Its totient is φ = 26101891360.

The previous prime is 57428758501. The next prime is 57428758553. The reversal of 57428758552 is 25585782475.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57428758553) 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, 1802553 + ... + 1834135.

It is an arithmetic number, because the mean of its divisors is an integer number (3671166240).

Almost surely, 257428758552 is an apocalyptic number.

It is an amenable number.

57428758552 is an abundant number, since it is smaller than the sum of its proper divisors (60048561128).

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

57428758552 is a wasteful number, since it uses less digits than its factorization.

57428758552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52263 (or 52259 counting only the distinct ones).

The product of its digits is 31360000, while the sum is 58.

The spelling of 57428758552 in words is "fifty-seven billion, four hundred twenty-eight million, seven hundred fifty-eight thousand, five hundred fifty-two".

Divisors: 1 2 4 8 11 22 44 88 20663 31583 41326 63166 82652 126332 165304 227293 252664 347413 454586 694826 909172 1389652 1818344 2779304 652599529 1305199058 2610398116 5220796232 7178594819 14357189638 28714379276 57428758552