80431890 has 64 divisors (see below), whose sum is σ = 240675840. Its totient is φ = 16712640.

The previous prime is 80431889. The next prime is 80431903. The reversal of 80431890 is 9813408.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15100 + ... + 19719.

It is an arithmetic number, because the mean of its divisors is an integer number (3760560).

Almost surely, 2^80431890 is an apocalyptic number.

80431890 is an abundant number, since it is smaller than the sum of its proper divisors (160243950).

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

80431890 is a wasteful number, since it uses less digits than its factorization.

80431890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34847.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 80431890 is about 8968.3827973610. The cubic root of 80431890 is about 431.6609458122.

It can be divided in two parts, 804318 and 90, that added together give a palindrome (804408).

The spelling of 80431890 in words is "eighty million, four hundred thirty-one thousand, eight hundred ninety".