80872218 has 24 divisors (see below), whose sum is σ = 200255328. Its totient is φ = 23106312.

The previous prime is 80872217. The next prime is 80872219. The reversal of 80872218 is 81227808.

It is an interprime number because it is at equal distance from previous prime (80872217) and next prime (80872219).

It is not an unprimeable number, because it can be changed into a prime (80872217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 320796 + ... + 321047.

It is an arithmetic number, because the mean of its divisors is an integer number (8343972).

Almost surely, 2^80872218 is an apocalyptic number.

80872218 is an abundant number, since it is smaller than the sum of its proper divisors (119383110).

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

80872218 is a wasteful number, since it uses less digits than its factorization.

80872218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641858 (or 641855 counting only the distinct ones).

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

The square root of 80872218 is about 8992.8981980227. The cubic root of 80872218 is about 432.4472284617.

The spelling of 80872218 in words is "eighty million, eight hundred seventy-two thousand, two hundred eighteen".