57628380 has 48 divisors (see below), whose sum is σ = 166569984. Its totient is φ = 14871360.

The previous prime is 57628369. The next prime is 57628391. The reversal of 57628380 is 8382675.

It is an interprime number because it is at equal distance from previous prime (57628369) and next prime (57628391).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13632 + ... + 17351.

It is an arithmetic number, because the mean of its divisors is an integer number (3470208).

Almost surely, 2^57628380 is an apocalyptic number.

It is an amenable number.

57628380 is an abundant number, since it is smaller than the sum of its proper divisors (108941604).

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

57628380 is a wasteful number, since it uses less digits than its factorization.

57628380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31026 (or 31024 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 57628380 is about 7591.3358508236. The cubic root of 57628380 is about 386.2591707168.

The spelling of 57628380 in words is "fifty-seven million, six hundred twenty-eight thousand, three hundred eighty".