80740072 has 32 divisors (see below), whose sum is σ = 183193920. Its totient is φ = 32567040.

The previous prime is 80740057. The next prime is 80740091. The reversal of 80740072 is 27004708.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 80740072.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41454 + ... + 43357.

It is an arithmetic number, because the mean of its divisors is an integer number (5724810).

Almost surely, 2^80740072 is an apocalyptic number.

It is an amenable number.

80740072 is an abundant number, since it is smaller than the sum of its proper divisors (102453848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80740072 is a wasteful number, since it uses less digits than its factorization.

80740072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84841 (or 84837 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 80740072 is about 8985.5479521285. The cubic root of 80740072 is about 432.2115590441.

The spelling of 80740072 in words is "eighty million, seven hundred forty thousand, seventy-two".