80156072 has 16 divisors (see below), whose sum is σ = 150390240. Its totient is φ = 40052016.

The previous prime is 80156057. The next prime is 80156077. The reversal of 80156072 is 27065108.

It is not an unprimeable number, because it can be changed into a prime (80156077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18023 + ... + 22025.

It is an arithmetic number, because the mean of its divisors is an integer number (9399390).

Almost surely, 2^80156072 is an apocalyptic number.

It is an amenable number.

80156072 is a deficient number, since it is larger than the sum of its proper divisors (70234168).

80156072 is a wasteful number, since it uses less digits than its factorization.

80156072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6512 (or 6508 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 80156072 is about 8952.9923489300. The cubic root of 80156072 is about 431.1669617616.

The spelling of 80156072 in words is "eighty million, one hundred fifty-six thousand, seventy-two".