57618990 has 192 divisors, whose sum is σ = 182250432. Its totient is φ = 12545280.

The previous prime is 57618959. The next prime is 57619013. The reversal of 57618990 is 9981675.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1557252 + ... + 1557288.

It is an arithmetic number, because the mean of its divisors is an integer number (949221).

Almost surely, 2^57618990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57618990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91125216).

57618990 is an abundant number, since it is smaller than the sum of its proper divisors (124631442).

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

57618990 is a wasteful number, since it uses less digits than its factorization.

57618990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 57618990 is about 7590.7173574044. The cubic root of 57618990 is about 386.2381904832.

The spelling of 57618990 in words is "fifty-seven million, six hundred eighteen thousand, nine hundred ninety".