80739252 has 72 divisors (see below), whose sum is σ = 229861632. Its totient is φ = 23673600.

The previous prime is 80739229. The next prime is 80739257. The reversal of 80739252 is 25293708.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80739257) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8988 + ... + 15564.

Almost surely, 2^80739252 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 80739252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114930816).

80739252 is an abundant number, since it is smaller than the sum of its proper divisors (149122380).

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

80739252 is a wasteful number, since it uses less digits than its factorization.

80739252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6629 (or 6624 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 80739252 is about 8985.5023231871. The cubic root of 80739252 is about 432.2100958522.

The spelling of 80739252 in words is "eighty million, seven hundred thirty-nine thousand, two hundred fifty-two".