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57123422148 = 22313366175783
BaseRepresentation
bin110101001100110100…
…100011111111000100
312110110000210111202210
4311030310203333010
51413442044002043
642124145103420
74061400035232
oct651464437704
9173400714683
1057123422148
11222537565a1
12b0a2627b70
1355047ca410
142a9c817952
151744e3d633
hexd4cd23fc4

57123422148 has 24 divisors (see below), whose sum is σ = 143540907328. Its totient is φ = 17576437536.

The previous prime is 57123422131. The next prime is 57123422149. The reversal of 57123422148 is 84122432175.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (57123422149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183087736 + ... + 183088047.

Almost surely, 257123422148 is an apocalyptic number.

It is an amenable number.

57123422148 is an abundant number, since it is smaller than the sum of its proper divisors (86417485180).

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

57123422148 is a wasteful number, since it uses less digits than its factorization.

57123422148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366175803 (or 366175801 counting only the distinct ones).

The product of its digits is 107520, while the sum is 39.

The spelling of 57123422148 in words is "fifty-seven billion, one hundred twenty-three million, four hundred twenty-two thousand, one hundred forty-eight".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 366175783 732351566 1098527349 1464703132 2197054698 4394109396 4760285179 9520570358 14280855537 19041140716 28561711074 57123422148