22231902 has 32 divisors (see below), whose sum is σ = 55436544. Its totient is φ = 5774400.

The previous prime is 22231901. The next prime is 22231921. The reversal of 22231902 is 20913222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22231901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23599 + ... + 24522.

It is an arithmetic number, because the mean of its divisors is an integer number (1732392).

Almost surely, 2^22231902 is an apocalyptic number.

22231902 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22231902 is an abundant number, since it is smaller than the sum of its proper divisors (33204642).

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

22231902 is a wasteful number, since it uses less digits than its factorization.

22231902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48144.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 22231902 is about 4715.0717916061. The cubic root of 22231902 is about 281.1850370454.

The spelling of 22231902 in words is "twenty-two million, two hundred thirty-one thousand, nine hundred two".