72426408 has 64 divisors (see below), whose sum is σ = 186701760. Its totient is φ = 23402496.

The previous prime is 72426401. The next prime is 72426413. The reversal of 72426408 is 80462427.

It is not an unprimeable number, because it can be changed into a prime (72426401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123091 + ... + 123677.

It is an arithmetic number, because the mean of its divisors is an integer number (2917215).

Almost surely, 2^72426408 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 72426408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93350880).

72426408 is an abundant number, since it is smaller than the sum of its proper divisors (114275352).

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

72426408 is a wasteful number, since it uses less digits than its factorization.

72426408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 742 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 72426408 is about 8510.3706147265. The cubic root of 72426408 is about 416.8364119761.

The spelling of 72426408 in words is "seventy-two million, four hundred twenty-six thousand, four hundred eight".