80047818 has 32 divisors (see below), whose sum is σ = 179080320. Its totient is φ = 26503200.

The previous prime is 80047813. The next prime is 80047819. The reversal of 80047818 is 81874008.

It is a super-2 number, since 2×80047818² = 12815306333122248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80047813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3246 + ... + 13062.

It is an arithmetic number, because the mean of its divisors is an integer number (5596260).

Almost surely, 2^80047818 is an apocalyptic number.

80047818 is an abundant number, since it is smaller than the sum of its proper divisors (99032502).

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

80047818 is a wasteful number, since it uses less digits than its factorization.

80047818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9979 (or 9973 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 80047818 is about 8946.9446181364. The cubic root of 80047818 is about 430.9727715387.

The spelling of 80047818 in words is "eighty million, forty-seven thousand, eight hundred eighteen".