57768428 has 6 divisors (see below), whose sum is σ = 101094756. Its totient is φ = 28884212.

The previous prime is 57768421. The next prime is 57768443. The reversal of 57768428 is 82486775.

It is not an unprimeable number, because it can be changed into a prime (57768421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7221050 + ... + 7221057.

It is an arithmetic number, because the mean of its divisors is an integer number (16849126).

Almost surely, 2^57768428 is an apocalyptic number.

It is an amenable number.

57768428 is a deficient number, since it is larger than the sum of its proper divisors (43326328).

57768428 is a wasteful number, since it uses less digits than its factorization.

57768428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14442111 (or 14442109 counting only the distinct ones).

The product of its digits is 752640, while the sum is 47.

The square root of 57768428 is about 7600.5544534593. The cubic root of 57768428 is about 386.5718121801.

The spelling of 57768428 in words is "fifty-seven million, seven hundred sixty-eight thousand, four hundred twenty-eight".