80518890 has 32 divisors (see below), whose sum is σ = 193487616. Its totient is φ = 21444800.

The previous prime is 80518859. The next prime is 80518897. The reversal of 80518890 is 9881508.

It is not an unprimeable number, because it can be changed into a prime (80518897) 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, 37999 + ... + 40061.

It is an arithmetic number, because the mean of its divisors is an integer number (6046488).

Almost surely, 2^80518890 is an apocalyptic number.

80518890 is an abundant number, since it is smaller than the sum of its proper divisors (112968726).

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

80518890 is a wasteful number, since it uses less digits than its factorization.

80518890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374.

The product of its (nonzero) digits is 23040, while the sum is 39.

The square root of 80518890 is about 8973.2318592578. The cubic root of 80518890 is about 431.8165265982.

The spelling of 80518890 in words is "eighty million, five hundred eighteen thousand, eight hundred ninety".