22249656 has 96 divisors (see below), whose sum is σ = 70827120. Its totient is φ = 6220800.

The previous prime is 22249649. The next prime is 22249673. The reversal of 22249656 is 65694222.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 22249656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9216 + ... + 11376.

Almost surely, 2^22249656 is an apocalyptic number.

22249656 is a gapful number since it is divisible by the number (26) 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 22249656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35413560).

22249656 is an abundant number, since it is smaller than the sum of its proper divisors (48577464).

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

22249656 is a wasteful number, since it uses less digits than its factorization.

22249656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197 (or 2190 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 22249656 is about 4716.9541019603. The cubic root of 22249656 is about 281.2598669131.

The spelling of 22249656 in words is "twenty-two million, two hundred forty-nine thousand, six hundred fifty-six".