22908402 has 96 divisors (see below), whose sum is σ = 57620160. Its totient is φ = 6514560.

The previous prime is 22908397. The next prime is 22908407. The reversal of 22908402 is 20480922.

It is an interprime number because it is at equal distance from previous prime (22908397) and next prime (22908407).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22908407) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 388249 + ... + 388307.

It is an arithmetic number, because the mean of its divisors is an integer number (600210).

Almost surely, 2^22908402 is an apocalyptic number.

22908402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 22908402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28810080).

22908402 is an abundant number, since it is smaller than the sum of its proper divisors (34711758).

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

22908402 is a wasteful number, since it uses less digits than its factorization.

22908402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 22908402 is about 4786.2722446597. The cubic root of 22908402 is about 284.0086703033.

The spelling of 22908402 in words is "twenty-two million, nine hundred eight thousand, four hundred two".