80722972 has 18 divisors (see below), whose sum is σ = 155275904. Its totient is φ = 36692040.

The previous prime is 80722969. The next prime is 80722991. The reversal of 80722972 is 27922708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82908 + ... + 83875.

Almost surely, 2^80722972 is an apocalyptic number.

It is an amenable number.

80722972 is a deficient number, since it is larger than the sum of its proper divisors (74552932).

80722972 is a wasteful number, since it uses less digits than its factorization.

80722972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166809 (or 166796 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 80722972 is about 8984.5963737944. The cubic root of 80722972 is about 432.1810440871.

The spelling of 80722972 in words is "eighty million, seven hundred twenty-two thousand, nine hundred seventy-two".