80724740 has 24 divisors (see below), whose sum is σ = 170009280. Its totient is φ = 32197088.

The previous prime is 80724737. The next prime is 80724757. The reversal of 80724740 is 4742708.

It is a junction number, because it is equal to n+sod(n) for n = 80724697 and 80724706.

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, 1559 + ... + 12801.

It is an arithmetic number, because the mean of its divisors is an integer number (7083720).

Almost surely, 2^80724740 is an apocalyptic number.

It is an amenable number.

80724740 is an abundant number, since it is smaller than the sum of its proper divisors (89284540).

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

80724740 is a wasteful number, since it uses less digits than its factorization.

80724740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11611 (or 11609 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 80724740 is about 8984.6947638748. The cubic root of 80724740 is about 432.1841992835.

The spelling of 80724740 in words is "eighty million, seven hundred twenty-four thousand, seven hundred forty".