80939536 has 10 divisors (see below), whose sum is σ = 156820382. Its totient is φ = 40469760.

The previous prime is 80939531. The next prime is 80939549. The reversal of 80939536 is 63593908.

It can be written as a sum of positive squares in only one way, i.e., 78854400 + 2085136 = 8880^2 + 1444^2 .

It is a junction number, because it is equal to n+sod(n) for n = 80939492 and 80939501.

It is not an unprimeable number, because it can be changed into a prime (80939531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2529345 + ... + 2529376.

Almost surely, 2^80939536 is an apocalyptic number.

It is an amenable number.

80939536 is a deficient number, since it is larger than the sum of its proper divisors (75880846).

80939536 is a wasteful number, since it uses less digits than its factorization.

80939536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5058729 (or 5058723 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 80939536 is about 8996.6402617866. The cubic root of 80939536 is about 432.5671848139.

The spelling of 80939536 in words is "eighty million, nine hundred thirty-nine thousand, five hundred thirty-six".