80971860 has 24 divisors (see below), whose sum is σ = 226721376. Its totient is φ = 21592480.

The previous prime is 80971859. The next prime is 80971871. The reversal of 80971860 is 6817908.

It is a super-2 number, since 2×80971860² = 13112884223719200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674706 + ... + 674825.

It is an arithmetic number, because the mean of its divisors is an integer number (9446724).

Almost surely, 2^80971860 is an apocalyptic number.

It is an amenable number.

80971860 is an abundant number, since it is smaller than the sum of its proper divisors (145749516).

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

80971860 is a wasteful number, since it uses less digits than its factorization.

80971860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349543 (or 1349541 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 80971860 is about 8998.4365308647. The cubic root of 80971860 is about 432.6247604704.

The spelling of 80971860 in words is "eighty million, nine hundred seventy-one thousand, eight hundred sixty".