80708920 has 16 divisors (see below), whose sum is σ = 181595160. Its totient is φ = 32283552.

The previous prime is 80708899. The next prime is 80708921. The reversal of 80708920 is 2980708.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80708921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1008822 + ... + 1008901.

Almost surely, 2^80708920 is an apocalyptic number.

It is an amenable number.

80708920 is an abundant number, since it is smaller than the sum of its proper divisors (100886240).

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

80708920 is a wasteful number, since it uses less digits than its factorization.

80708920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017734 (or 2017730 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 80708920 is about 8983.8143346799. The cubic root of 80708920 is about 432.1559650614.

The spelling of 80708920 in words is "eighty million, seven hundred eight thousand, nine hundred twenty".