80747732 has 24 divisors (see below), whose sum is σ = 154328832. Its totient is φ = 36741600.

The previous prime is 80747731. The next prime is 80747753. The reversal of 80747732 is 23774708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80747731) 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, 7244 + ... + 14627.

It is an arithmetic number, because the mean of its divisors is an integer number (6430368).

Almost surely, 2^80747732 is an apocalyptic number.

It is an amenable number.

80747732 is a deficient number, since it is larger than the sum of its proper divisors (73581100).

80747732 is a wasteful number, since it uses less digits than its factorization.

80747732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21959 (or 21957 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 80747732 is about 8985.9741820239. The cubic root of 80747732 is about 432.2252269200.

The spelling of 80747732 in words is "eighty million, seven hundred forty-seven thousand, seven hundred thirty-two".