57728001 has 4 divisors (see below), whose sum is σ = 76970672. Its totient is φ = 38485332.

The previous prime is 57727997. The next prime is 57728003. The reversal of 57728001 is 10082775.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 57728001 - 2² = 57727997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57728001.

It is not an unprimeable number, because it can be changed into a prime (57728003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9621331 + ... + 9621336.

It is an arithmetic number, because the mean of its divisors is an integer number (19242668).

Almost surely, 2^57728001 is an apocalyptic number.

It is an amenable number.

57728001 is a deficient number, since it is larger than the sum of its proper divisors (19242671).

57728001 is a wasteful number, since it uses less digits than its factorization.

57728001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19242670.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 57728001 is about 7597.8945109813. The cubic root of 57728001 is about 386.4816153595.

The spelling of 57728001 in words is "fifty-seven million, seven hundred twenty-eight thousand, one".