22906520 has 192 divisors, whose sum is σ = 68947200. Its totient is φ = 6773760.

The previous prime is 22906519. The next prime is 22906561. The reversal of 22906520 is 2560922.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 22906520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 738905 + ... + 738935.

It is an arithmetic number, because the mean of its divisors is an integer number (359100).

Almost surely, 2^22906520 is an apocalyptic number.

22906520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22906520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34473600).

22906520 is an abundant number, since it is smaller than the sum of its proper divisors (46040680).

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

22906520 is a wasteful number, since it uses less digits than its factorization.

22906520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 22906520 is about 4786.0756366777. The cubic root of 22906520 is about 284.0008926772. Note that the first 3 decimals are identical.

The spelling of 22906520 in words is "twenty-two million, nine hundred six thousand, five hundred twenty".