22505670 has 96 divisors (see below), whose sum is σ = 64696320. Its totient is φ = 5382720.

The previous prime is 22505663. The next prime is 22505687. The reversal of 22505670 is 7650522.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 125641 + ... + 125819.

It is an arithmetic number, because the mean of its divisors is an integer number (673920).

Almost surely, 2^22505670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22505670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32348160).

22505670 is an abundant number, since it is smaller than the sum of its proper divisors (42190650).

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

22505670 is a wasteful number, since it uses less digits than its factorization.

22505670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 22505670 is about 4744.0141230818. The cubic root of 22505670 is about 282.3345207805.

The spelling of 22505670 in words is "twenty-two million, five hundred five thousand, six hundred seventy".