80726992 has 10 divisors (see below), whose sum is σ = 156408578. Its totient is φ = 40363488.

The previous prime is 80726969. The next prime is 80726993. The reversal of 80726992 is 29962708.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 78428736 + 2298256 = 8856^2 + 1516^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80726993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2522703 + ... + 2522734.

Almost surely, 2^80726992 is an apocalyptic number.

It is an amenable number.

80726992 is a deficient number, since it is larger than the sum of its proper divisors (75681586).

80726992 is a wasteful number, since it uses less digits than its factorization.

80726992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5045445 (or 5045439 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 80726992 is about 8984.8200872360. The cubic root of 80726992 is about 432.1882181662.

It can be divided in two parts, 80726 and 992, that added together give a palindrome (81718).

The spelling of 80726992 in words is "eighty million, seven hundred twenty-six thousand, nine hundred ninety-two".