57828407 has 32 divisors (see below), whose sum is σ = 78019200. Its totient is φ = 41545728.

The previous prime is 57828403. The next prime is 57828413. The reversal of 57828407 is 70482875.

It is not a de Polignac number, because 57828407 - 2² = 57828403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57828403) 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, 44219 + ... + 45507.

It is an arithmetic number, because the mean of its divisors is an integer number (2438100).

Almost surely, 2^57828407 is an apocalyptic number.

57828407 is a deficient number, since it is larger than the sum of its proper divisors (20190793).

57828407 is a wasteful number, since it uses less digits than its factorization.

57828407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355.

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 57828407 is about 7604.4991288053. The cubic root of 57828407 is about 386.7055540391.

The spelling of 57828407 in words is "fifty-seven million, eight hundred twenty-eight thousand, four hundred seven".