80256816 has 30 divisors (see below), whose sum is σ = 224608020. Its totient is φ = 26752224.

The previous prime is 80256769. The next prime is 80256829. The reversal of 80256816 is 61865208.

It is a happy number.

80256816 is a `hidden beast` number, since 80 + 2 + 568 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 278526 + ... + 278813.

It is an arithmetic number, because the mean of its divisors is an integer number (7486934).

Almost surely, 2^80256816 is an apocalyptic number.

It is an amenable number.

80256816 is an abundant number, since it is smaller than the sum of its proper divisors (144351204).

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

80256816 is a wasteful number, since it uses less digits than its factorization.

80256816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557353 (or 557344 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 80256816 is about 8958.6168575288. The cubic root of 80256816 is about 431.3475232500.

It can be divided in two parts, 8025 and 6816, that added together give a palindrome (14841).

The spelling of 80256816 in words is "eighty million, two hundred fifty-six thousand, eight hundred sixteen".