80895780 has 96 divisors (see below), whose sum is σ = 287642880. Its totient is φ = 18489600.

The previous prime is 80895779. The next prime is 80895799. The reversal of 80895780 is 8759808.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6921 + ... + 14480.

It is an arithmetic number, because the mean of its divisors is an integer number (2996280).

Almost surely, 2^80895780 is an apocalyptic number.

It is an amenable number.

80895780 is an abundant number, since it is smaller than the sum of its proper divisors (206747100).

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

80895780 is a wasteful number, since it uses less digits than its factorization.

80895780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21426 (or 21418 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 80895780 is about 8994.2081363509. The cubic root of 80895780 is about 432.4892220019.

The spelling of 80895780 in words is "eighty million, eight hundred ninety-five thousand, seven hundred eighty".