57903990 has 16 divisors (see below), whose sum is σ = 138969648. Its totient is φ = 15441056.

The previous prime is 57903983. The next prime is 57903991. The reversal of 57903990 is 9930975.

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 (57903991) 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, 965037 + ... + 965096.

It is an arithmetic number, because the mean of its divisors is an integer number (8685603).

Almost surely, 2^57903990 is an apocalyptic number.

57903990 is an abundant number, since it is smaller than the sum of its proper divisors (81065658).

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

57903990 is a wasteful number, since it uses less digits than its factorization.

57903990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930143.

The product of its (nonzero) digits is 76545, while the sum is 42.

The square root of 57903990 is about 7609.4671298324. The cubic root of 57903990 is about 386.8739582463.

The spelling of 57903990 in words is "fifty-seven million, nine hundred three thousand, nine hundred ninety".