72490306 has 32 divisors (see below), whose sum is σ = 127612800. Its totient is φ = 30870000.

The previous prime is 72490283. The next prime is 72490333. The reversal of 72490306 is 60309427.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171976 + ... + 172396.

It is an arithmetic number, because the mean of its divisors is an integer number (3987900).

Almost surely, 2^72490306 is an apocalyptic number.

72490306 is a deficient number, since it is larger than the sum of its proper divisors (55122494).

72490306 is a wasteful number, since it uses less digits than its factorization.

72490306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 72490306 is about 8514.1239126524. The cubic root of 72490306 is about 416.9589602046.

The spelling of 72490306 in words is "seventy-two million, four hundred ninety thousand, three hundred six".