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57871972 = 2253272981
BaseRepresentation
bin1101110011000…
…0111001100100
311000220012102101
43130300321210
5104303400342
65424221444
71301621644
oct334607144
9130805371
1057871972
112a738084
121746a884
13bcb3492
147986524
1551323b7
hex3730e64

57871972 has 12 divisors (see below), whose sum is σ = 103187196. Its totient is φ = 28389920.

The previous prime is 57871969. The next prime is 57871973. The reversal of 57871972 is 27917875.

57871972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 42693156 + 15178816 = 6534^2 + 3896^2 .

It is not an unprimeable number, because it can be changed into a prime (57871973) 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 3 ways as a sum of consecutive naturals, for example, 136279 + ... + 136702.

It is an arithmetic number, because the mean of its divisors is an integer number (8598933).

Almost surely, 257871972 is an apocalyptic number.

It is an amenable number.

57871972 is a deficient number, since it is larger than the sum of its proper divisors (45315224).

57871972 is a wasteful number, since it uses less digits than its factorization.

57871972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273038 (or 273036 counting only the distinct ones).

The product of its digits is 246960, while the sum is 46.

The square root of 57871972 is about 7607.3630122402. The cubic root of 57871972 is about 386.8026378058.

The spelling of 57871972 in words is "fifty-seven million, eight hundred seventy-one thousand, nine hundred seventy-two".

Divisors: 1 2 4 53 106 212 272981 545962 1091924 14467993 28935986 57871972