80639296 has 56 divisors (see below), whose sum is σ = 170983656. Its totient is φ = 37601280.

The previous prime is 80639291. The next prime is 80639303. The reversal of 80639296 is 69293608.

It can be written as a sum of positive squares in 4 ways, for example, as 20793600 + 59845696 = 4560^2 + 7736^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80639291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148786 + ... + 149326.

Almost surely, 2^80639296 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 80639296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85491828).

80639296 is an abundant number, since it is smaller than the sum of its proper divisors (90344360).

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

80639296 is a wasteful number, since it uses less digits than its factorization.

80639296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707 (or 697 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 80639296 is about 8979.9385298564. The cubic root of 80639296 is about 432.0316620598.

The spelling of 80639296 in words is "eighty million, six hundred thirty-nine thousand, two hundred ninety-six".