57948990 has 64 divisors (see below), whose sum is σ = 155457792. Its totient is φ = 13702400.

The previous prime is 57948977. The next prime is 57948991. The reversal of 57948990 is 9984975.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57948991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11389 + ... + 15671.

It is an arithmetic number, because the mean of its divisors is an integer number (2429028).

Almost surely, 2^57948990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57948990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77728896).

57948990 is an abundant number, since it is smaller than the sum of its proper divisors (97508802).

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

57948990 is a wasteful number, since it uses less digits than its factorization.

57948990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4345.

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 57948990 is about 7612.4233986294. The cubic root of 57948990 is about 386.9741518034.

The spelling of 57948990 in words is "fifty-seven million, nine hundred forty-eight thousand, nine hundred ninety".