57428750 has 20 divisors (see below), whose sum is σ = 107646792. Its totient is φ = 22971000.

The previous prime is 57428717. The next prime is 57428759. The reversal of 57428750 is 5782475.

57428750 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×57428750² = 6596122653125000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57428759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 21722 + ... + 24221.

Almost surely, 2^57428750 is an apocalyptic number.

57428750 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

57428750 is a deficient number, since it is larger than the sum of its proper divisors (50218042).

57428750 is an equidigital number, since it uses as much as digits as its factorization.

57428750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45965 (or 45950 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 57428750 is about 7578.1759018909. The cubic root of 57428750 is about 385.8126423023.

The spelling of 57428750 in words is "fifty-seven million, four hundred twenty-eight thousand, seven hundred fifty".