73247240 has 32 divisors (see below), whose sum is σ = 179789760. Its totient is φ = 26635200.

The previous prime is 73247233. The next prime is 73247257. The reversal of 73247240 is 4274237.

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 7 ways as a sum of consecutive naturals, for example, 82796 + ... + 83675.

It is an arithmetic number, because the mean of its divisors is an integer number (5618430).

Almost surely, 2^73247240 is an apocalyptic number.

It is an amenable number.

73247240 is an abundant number, since it is smaller than the sum of its proper divisors (106542520).

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

73247240 is a wasteful number, since it uses less digits than its factorization.

73247240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166493 (or 166489 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 29.

The square root of 73247240 is about 8558.4601418713. The cubic root of 73247240 is about 418.4052143730.

The spelling of 73247240 in words is "seventy-three million, two hundred forty-seven thousand, two hundred forty".