80720502 has 16 divisors (see below), whose sum is σ = 161564160. Its totient is φ = 26886312.

The previous prime is 80720491. The next prime is 80720527. The reversal of 80720502 is 20502708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4899 + ... + 13617.

It is an arithmetic number, because the mean of its divisors is an integer number (10097760).

Almost surely, 2^80720502 is an apocalyptic number.

80720502 is an abundant number, since it is smaller than the sum of its proper divisors (80843658).

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

80720502 is a wasteful number, since it uses less digits than its factorization.

80720502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10267.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 80720502 is about 8984.4589152603. The cubic root of 80720502 is about 432.1766360149.

The spelling of 80720502 in words is "eighty million, seven hundred twenty thousand, five hundred two".