22155630 has 32 divisors (see below), whose sum is σ = 60770304. Its totient is φ = 5064096.

The previous prime is 22155619. The next prime is 22155649. The reversal of 22155630 is 3655122.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22155630.

It is a congruent number.

It is an unprimeable number.

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, 52542 + ... + 52961.

It is an arithmetic number, because the mean of its divisors is an integer number (1899072).

Almost surely, 2^22155630 is an apocalyptic number.

22155630 is an abundant number, since it is smaller than the sum of its proper divisors (38614674).

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

22155630 is a wasteful number, since it uses less digits than its factorization.

22155630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105520.

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

The square root of 22155630 is about 4706.9767367175. The cubic root of 22155630 is about 280.8631105052.

The spelling of 22155630 in words is "twenty-two million, one hundred fifty-five thousand, six hundred thirty".