72240408 has 48 divisors (see below), whose sum is σ = 197500680. Its totient is φ = 23852544.

The previous prime is 72240403. The next prime is 72240433. The reversal of 72240408 is 80404227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72240403) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3016 + ... + 12392.

Almost surely, 2^72240408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72240408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98750340).

72240408 is an abundant number, since it is smaller than the sum of its proper divisors (125260272).

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

72240408 is a wasteful number, since it uses less digits than its factorization.

72240408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9496 (or 9489 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 72240408 is about 8499.4357459775. The cubic root of 72240408 is about 416.4792768746.

The spelling of 72240408 in words is "seventy-two million, two hundred forty thousand, four hundred eight".