72057240 has 48 divisors (see below), whose sum is σ = 234187200. Its totient is φ = 19215168.

The previous prime is 72057221. The next prime is 72057269. The reversal of 72057240 is 4275027.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99720 + ... + 100439.

It is an arithmetic number, because the mean of its divisors is an integer number (4878900).

Almost surely, 2^72057240 is an apocalyptic number.

It is an amenable number.

72057240 is an abundant number, since it is smaller than the sum of its proper divisors (162129960).

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

72057240 is a wasteful number, since it uses less digits than its factorization.

72057240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200176 (or 200169 counting only the distinct ones).

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

The square root of 72057240 is about 8488.6536034874. The cubic root of 72057240 is about 416.1269798511.

The spelling of 72057240 in words is "seventy-two million, fifty-seven thousand, two hundred forty".