57140428 has 12 divisors (see below), whose sum is σ = 100050552. Its totient is φ = 28554560.

The previous prime is 57140423. The next prime is 57140431. The reversal of 57140428 is 82404175.

It is a self number, because there is not a number n which added to its sum of digits gives 57140428.

It is not an unprimeable number, because it can be changed into a prime (57140423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9123 + ... + 14053.

It is an arithmetic number, because the mean of its divisors is an integer number (8337546).

Almost surely, 2^57140428 is an apocalyptic number.

It is an amenable number.

57140428 is a deficient number, since it is larger than the sum of its proper divisors (42910124).

57140428 is a wasteful number, since it uses less digits than its factorization.

57140428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7832 (or 7830 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 57140428 is about 7559.1287857795. The cubic root of 57140428 is about 385.1658991554.

The spelling of 57140428 in words is "fifty-seven million, one hundred forty thousand, four hundred twenty-eight".