72818408 has 32 divisors (see below), whose sum is σ = 148915200. Its totient is φ = 33179328.

The previous prime is 72818399. The next prime is 72818413. The reversal of 72818408 is 80481827.

It is a happy number.

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, 3785 + ... + 12647.

It is an arithmetic number, because the mean of its divisors is an integer number (4653600).

Almost surely, 2^72818408 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 72818408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74457600).

72818408 is an abundant number, since it is smaller than the sum of its proper divisors (76096792).

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

72818408 is a wasteful number, since it uses less digits than its factorization.

72818408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8961 (or 8957 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 72818408 is about 8533.3702603368. The cubic root of 72818408 is about 417.5870864266.

The spelling of 72818408 in words is "seventy-two million, eight hundred eighteen thousand, four hundred eight".