72702820 has 24 divisors (see below), whose sum is σ = 152913600. Its totient is φ = 29035872.

The previous prime is 72702811. The next prime is 72702823. The reversal of 72702820 is 2820727.

It is not an unprimeable number, because it can be changed into a prime (72702823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12321 + ... + 17239.

It is an arithmetic number, because the mean of its divisors is an integer number (6371400).

Almost surely, 2^72702820 is an apocalyptic number.

It is an amenable number.

72702820 is an abundant number, since it is smaller than the sum of its proper divisors (80210780).

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

72702820 is a wasteful number, since it uses less digits than its factorization.

72702820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5667 (or 5665 counting only the distinct ones).

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

The square root of 72702820 is about 8526.5948654782. The cubic root of 72702820 is about 417.3660177006.

The spelling of 72702820 in words is "seventy-two million, seven hundred two thousand, eight hundred twenty".