57640080 has 80 divisors (see below), whose sum is σ = 183541824. Its totient is φ = 14952960.

The previous prime is 57640061. The next prime is 57640111. The reversal of 57640080 is 8004675.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5635 + ... + 12125.

Almost surely, 2^57640080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57640080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91770912).

57640080 is an abundant number, since it is smaller than the sum of its proper divisors (125901744).

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

57640080 is a wasteful number, since it uses less digits than its factorization.

57640080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6544 (or 6538 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 57640080 is about 7592.1064270728. The cubic root of 57640080 is about 386.2853090332.

The spelling of 57640080 in words is "fifty-seven million, six hundred forty thousand, eighty".