72240506340 has 48 divisors (see below), whose sum is σ = 211067918208. Its totient is φ = 18426563584.

The previous prime is 72240506339. The next prime is 72240506399. The reversal of 72240506340 is 4360504227.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26172717 + ... + 26175476.

It is an arithmetic number, because the mean of its divisors is an integer number (4397248296).

Almost surely, 2^72240506340 is an apocalyptic number.

It is an amenable number.

72240506340 is an abundant number, since it is smaller than the sum of its proper divisors (138827411868).

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

72240506340 is a wasteful number, since it uses less digits than its factorization.

72240506340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52348228 (or 52348226 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 33.

The spelling of 72240506340 in words is "seventy-two billion, two hundred forty million, five hundred six thousand, three hundred forty".