57020288 has 32 divisors (see below), whose sum is σ = 122336760. Its totient is φ = 26316288.

The previous prime is 57020287. The next prime is 57020291. The reversal of 57020288 is 88202075.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57020287) 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, 15470 + ... + 18797.

Almost surely, 2^57020288 is an apocalyptic number.

It is an amenable number.

57020288 is an abundant number, since it is smaller than the sum of its proper divisors (65316472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57020288 is a wasteful number, since it uses less digits than its factorization.

57020288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34294 (or 34282 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 57020288 is about 7551.1779213577. The cubic root of 57020288 is about 384.8957675893.

The spelling of 57020288 in words is "fifty-seven million, twenty thousand, two hundred eighty-eight".