57428723 has 8 divisors (see below), whose sum is σ = 65373696. Its totient is φ = 49937800.

The previous prime is 57428717. The next prime is 57428759. The reversal of 57428723 is 32782475.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57428723 - 2⁸ = 57428467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57428123) 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, 113243 + ... + 113748.

It is an arithmetic number, because the mean of its divisors is an integer number (8171712).

Almost surely, 2^57428723 is an apocalyptic number.

57428723 is a deficient number, since it is larger than the sum of its proper divisors (7944973).

57428723 is a wasteful number, since it uses less digits than its factorization.

57428723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227025.

The product of its digits is 94080, while the sum is 38.

The square root of 57428723 is about 7578.1741204594. The cubic root of 57428723 is about 385.8125818393.

The spelling of 57428723 in words is "fifty-seven million, four hundred twenty-eight thousand, seven hundred twenty-three".