72402304 has 48 divisors (see below), whose sum is σ = 156234420. Its totient is φ = 33406464.

The previous prime is 72402283. The next prime is 72402307. The reversal of 72402304 is 40320427.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72402307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19959 + ... + 23305.

Almost surely, 2^72402304 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 72402304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78117210).

72402304 is an abundant number, since it is smaller than the sum of its proper divisors (83832116).

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

72402304 is a wasteful number, since it uses less digits than its factorization.

72402304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3387 (or 3362 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 72402304 is about 8508.9543423384. The cubic root of 72402304 is about 416.7901648498.

The spelling of 72402304 in words is "seventy-two million, four hundred two thousand, three hundred four".