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57990878 = 2112635949
BaseRepresentation
bin1101110100110…
…1111011011110
311001010020112022
43131031323132
5104321202003
65430540142
71302625421
oct335157336
9131106468
1057990878
112a809450
1217507652
13c02563a
1479b79b8
155157738
hex374dede

57990878 has 8 divisors (see below), whose sum is σ = 94894200. Its totient is φ = 26359480.

The previous prime is 57990871. The next prime is 57990899. The reversal of 57990878 is 87809975.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57990871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1317953 + ... + 1317996.

It is an arithmetic number, because the mean of its divisors is an integer number (11861775).

Almost surely, 257990878 is an apocalyptic number.

57990878 is a deficient number, since it is larger than the sum of its proper divisors (36903322).

57990878 is a wasteful number, since it uses less digits than its factorization.

57990878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635962.

The product of its (nonzero) digits is 1270080, while the sum is 53.

The square root of 57990878 is about 7615.1741936741. The cubic root of 57990878 is about 387.0673698168.

The spelling of 57990878 in words is "fifty-seven million, nine hundred ninety thousand, eight hundred seventy-eight".

Divisors: 1 2 11 22 2635949 5271898 28995439 57990878