80857580 has 24 divisors (see below), whose sum is σ = 174391728. Its totient is φ = 31468608.

The previous prime is 80857577. The next prime is 80857583. The reversal of 80857580 is 8575808.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (80857577) and next prime (80857583).

It is not an unprimeable number, because it can be changed into a prime (80857583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53894 + ... + 55373.

It is an arithmetic number, because the mean of its divisors is an integer number (7266322).

Almost surely, 2^80857580 is an apocalyptic number.

It is an amenable number.

80857580 is an abundant number, since it is smaller than the sum of its proper divisors (93534148).

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

80857580 is a wasteful number, since it uses less digits than its factorization.

80857580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109313 (or 109311 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 41.

The square root of 80857580 is about 8992.0842967579. The cubic root of 80857580 is about 432.4211356755.

The spelling of 80857580 in words is "eighty million, eight hundred fifty-seven thousand, five hundred eighty".