22495590 has 192 divisors, whose sum is σ = 71150400. Its totient is φ = 5031936.

The previous prime is 22495589. The next prime is 22495597. The reversal of 22495590 is 9559422.

It is a happy number.

22495590 is a `hidden beast` number, since 22 + 49 + 5 + 590 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22495597) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 775696 + ... + 775724.

It is an arithmetic number, because the mean of its divisors is an integer number (370575).

Almost surely, 2^22495590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22495590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35575200).

22495590 is an abundant number, since it is smaller than the sum of its proper divisors (48654810).

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

22495590 is a wasteful number, since it uses less digits than its factorization.

22495590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 22495590 is about 4742.9516126564. The cubic root of 22495590 is about 282.2923631530.

The spelling of 22495590 in words is "twenty-two million, four hundred ninety-five thousand, five hundred ninety".