80739712 has 32 divisors (see below), whose sum is σ = 166402800. Its totient is φ = 38976000.

The previous prime is 80739707. The next prime is 80739713. The reversal of 80739712 is 21793708.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80739713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7164 + ... + 14587.

Almost surely, 2^80739712 is an apocalyptic number.

It is an amenable number.

80739712 is an abundant number, since it is smaller than the sum of its proper divisors (85663088).

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

80739712 is a wasteful number, since it uses less digits than its factorization.

80739712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21794 (or 21782 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 80739712 is about 8985.5279199388. The cubic root of 80739712 is about 432.2109166684.

The spelling of 80739712 in words is "eighty million, seven hundred thirty-nine thousand, seven hundred twelve".