80631936 has 320 divisors, whose sum is σ = 302132160. Its totient is φ = 20736000.

The previous prime is 80631893. The next prime is 80631949. The reversal of 80631936 is 63913608.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 80631936.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 798286 + ... + 798386.

It is an arithmetic number, because the mean of its divisors is an integer number (944163).

Almost surely, 2^80631936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80631936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151066080).

80631936 is an abundant number, since it is smaller than the sum of its proper divisors (221500224).

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

80631936 is a wasteful number, since it uses less digits than its factorization.

80631936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 80631936 is about 8979.5287181455. The cubic root of 80631936 is about 432.0185177247.

It can be divided in two parts, 8063 and 1936, that added together give a palindrome (9999).

The spelling of 80631936 in words is "eighty million, six hundred thirty-one thousand, nine hundred thirty-six".