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57148576772 = 2277128746769
BaseRepresentation
bin110101001110010100…
…100001010000000100
312110111210010111102112
4311032110201100010
51414020013424042
642130444200152
74062123613310
oct651624412004
9173453114375
1057148576772
1122266977641
12b0aab39058
135509a96b01
142aa1cc4b40
15174725b982
hexd4e521404

57148576772 has 24 divisors (see below), whose sum is σ = 115906976640. Its totient is φ = 24147285120.

The previous prime is 57148576759. The next prime is 57148576777. The reversal of 57148576772 is 27767584175.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (57148576777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14371397 + ... + 14375372.

It is an arithmetic number, because the mean of its divisors is an integer number (4829457360).

Almost surely, 257148576772 is an apocalyptic number.

It is an amenable number.

57148576772 is an abundant number, since it is smaller than the sum of its proper divisors (58758399868).

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

57148576772 is a wasteful number, since it uses less digits than its factorization.

57148576772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28746851 (or 28746849 counting only the distinct ones).

The product of its digits is 23049600, while the sum is 59.

The spelling of 57148576772 in words is "fifty-seven billion, one hundred forty-eight million, five hundred seventy-six thousand, seven hundred seventy-two".

Divisors: 1 2 4 7 14 28 71 142 284 497 994 1988 28746769 57493538 114987076 201227383 402454766 804909532 2041020599 4082041198 8164082396 14287144193 28574288386 57148576772