22551630 has 32 divisors (see below), whose sum is σ = 54269568. Its totient is φ = 5997600.

The previous prime is 22551619. The next prime is 22551631. The reversal of 22551630 is 3615522.

It is a self number, because there is not a number n which added to its sum of digits gives 22551630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22551631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13965 + ... + 15495.

It is an arithmetic number, because the mean of its divisors is an integer number (1695924).

Almost surely, 2^22551630 is an apocalyptic number.

22551630 is an abundant number, since it is smaller than the sum of its proper divisors (31717938).

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

22551630 is a wasteful number, since it uses less digits than its factorization.

22551630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 22551630 is about 4748.8556516281. The cubic root of 22551630 is about 282.5265801080.

The spelling of 22551630 in words is "twenty-two million, five hundred fifty-one thousand, six hundred thirty".