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57154704220 = 22523124249357
BaseRepresentation
bin110101001110101011…
…111001001101011100
312110112012122210201001
4311032223321031130
51414023101013340
642131223400044
74062226653505
oct651653711534
9173465583631
1057154704220
112226a382249
12b0b0bb3024
13550b130b13
142aa2a3bbac
151747a6c29a
hexd4eaf935c

57154704220 has 24 divisors (see below), whose sum is σ = 125243352864. Its totient is φ = 21867886656.

The previous prime is 57154704203. The next prime is 57154704227. The reversal of 57154704220 is 2240745175.

It is a self number, because there is not a number n which added to its sum of digits gives 57154704220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57154704227) 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, 62124219 + ... + 62125138.

It is an arithmetic number, because the mean of its divisors is an integer number (5218473036).

Almost surely, 257154704220 is an apocalyptic number.

It is an amenable number.

57154704220 is an abundant number, since it is smaller than the sum of its proper divisors (68088648644).

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

57154704220 is a wasteful number, since it uses less digits than its factorization.

57154704220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124249389 (or 124249387 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 37.

The spelling of 57154704220 in words is "fifty-seven billion, one hundred fifty-four million, seven hundred four thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 23 46 92 115 230 460 124249357 248498714 496997428 621246785 1242493570 2484987140 2857735211 5715470422 11430940844 14288676055 28577352110 57154704220