72722502 has 32 divisors (see below), whose sum is σ = 163660800. Its totient is φ = 23932584.

The previous prime is 72722491. The next prime is 72722521. The reversal of 72722502 is 20522727.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4258 + ... + 12789.

It is an arithmetic number, because the mean of its divisors is an integer number (5114400).

Almost surely, 2^72722502 is an apocalyptic number.

72722502 is an abundant number, since it is smaller than the sum of its proper divisors (90938298).

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

72722502 is a wasteful number, since it uses less digits than its factorization.

72722502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17137 (or 17131 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 72722502 is about 8527.7489409574. The cubic root of 72722502 is about 417.4036772063.

The spelling of 72722502 in words is "seventy-two million, seven hundred twenty-two thousand, five hundred two".