80749372 has 24 divisors (see below), whose sum is σ = 156022272. Its totient is φ = 36260400.

The previous prime is 80749367. The next prime is 80749379. The reversal of 80749372 is 27394708.

It is a super-2 number, since 2×80749372² = 13040922156788768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80749379) by changing a digit.

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, 7404 + ... + 14707.

It is an arithmetic number, because the mean of its divisors is an integer number (6500928).

Almost surely, 2^80749372 is an apocalyptic number.

It is an amenable number.

80749372 is a deficient number, since it is larger than the sum of its proper divisors (75272900).

80749372 is a wasteful number, since it uses less digits than its factorization.

80749372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22209 (or 22207 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 80749372 is about 8986.0654348831. The cubic root of 80749372 is about 432.2281530892.

The spelling of 80749372 in words is "eighty million, seven hundred forty-nine thousand, three hundred seventy-two".