80815216 has 40 divisors (see below), whose sum is σ = 159588000. Its totient is φ = 39640320.

The previous prime is 80815211. The next prime is 80815219. The reversal of 80815216 is 61251808.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80815211) 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, 259701 + ... + 260011.

It is an arithmetic number, because the mean of its divisors is an integer number (3989700).

Almost surely, 2^80815216 is an apocalyptic number.

It is an amenable number.

80815216 is a deficient number, since it is larger than the sum of its proper divisors (78772784).

80815216 is a wasteful number, since it uses less digits than its factorization.

80815216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577 (or 571 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 80815216 is about 8989.7283607459. The cubic root of 80815216 is about 432.3456025003.

The spelling of 80815216 in words is "eighty million, eight hundred fifteen thousand, two hundred sixteen".