80912390 has 32 divisors (see below), whose sum is σ = 163670976. Its totient is φ = 28575360.

The previous prime is 80912357. The next prime is 80912417. The reversal of 80912390 is 9321908.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10541 + ... + 16520.

It is an arithmetic number, because the mean of its divisors is an integer number (5114718).

Almost surely, 2^80912390 is an apocalyptic number.

80912390 is an abundant number, since it is smaller than the sum of its proper divisors (82758586).

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

80912390 is a wasteful number, since it uses less digits than its factorization.

80912390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27104.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 80912390 is about 8995.1314609626. The cubic root of 80912390 is about 432.5188203912.

The spelling of 80912390 in words is "eighty million, nine hundred twelve thousand, three hundred ninety".