72202440 has 32 divisors (see below), whose sum is σ = 216607680. Its totient is φ = 19253952.

The previous prime is 72202397. The next prime is 72202457. The reversal of 72202440 is 4420227.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300724 + ... + 300963.

It is an arithmetic number, because the mean of its divisors is an integer number (6768990).

Almost surely, 2^72202440 is an apocalyptic number.

It is an amenable number.

72202440 is an abundant number, since it is smaller than the sum of its proper divisors (144405240).

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

72202440 is a wasteful number, since it uses less digits than its factorization.

72202440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601701 (or 601697 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 72202440 is about 8497.2018923879. The cubic root of 72202440 is about 416.4062999136.

Adding to 72202440 its reverse (4420227), we get a palindrome (76622667).

The spelling of 72202440 in words is "seventy-two million, two hundred two thousand, four hundred forty".