80000072 has 16 divisors (see below), whose sum is σ = 156522240. Its totient is φ = 38260816.

The previous prime is 80000069. The next prime is 80000083. The reversal of 80000072 is 27000008.

80000072 is a modest number, since divided by 72 gives 8 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 80000072.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217208 + ... + 217575.

It is an arithmetic number, because the mean of its divisors is an integer number (9782640).

Almost surely, 2^80000072 is an apocalyptic number.

It is an amenable number.

80000072 is a deficient number, since it is larger than the sum of its proper divisors (76522168).

80000072 is a wasteful number, since it uses less digits than its factorization.

80000072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434812 (or 434808 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 80000072 is about 8944.2759349206. The cubic root of 80000072 is about 430.8870672724.

The spelling of 80000072 in words is "eighty million, seventy-two", and thus it is an aban number and an uban number.