22506630 has 64 divisors (see below), whose sum is σ = 56263680. Its totient is φ = 5757696.

The previous prime is 22506629. The next prime is 22506637. The reversal of 22506630 is 3660522.

It is a self number, because there is not a number n which added to its sum of digits gives 22506630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22506637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94051 + ... + 94289.

It is an arithmetic number, because the mean of its divisors is an integer number (879120).

Almost surely, 2^22506630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22506630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28131840).

22506630 is an abundant number, since it is smaller than the sum of its proper divisors (33757050).

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

22506630 is a wasteful number, since it uses less digits than its factorization.

22506630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 22506630 is about 4744.1153021401. The cubic root of 22506630 is about 282.3385351361.

The spelling of 22506630 in words is "twenty-two million, five hundred six thousand, six hundred thirty".