22149900 has 54 divisors (see below), whose sum is σ = 69430452. Its totient is φ = 5906400.

The previous prime is 22149899. The next prime is 22149901. The reversal of 22149900 is 994122.

22149900 is nontrivially palindromic in base 7.

It is an interprime number because it is at equal distance from previous prime (22149899) and next prime (22149901).

It is not an unprimeable number, because it can be changed into a prime (22149901) 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 17 ways as a sum of consecutive naturals, for example, 11406 + ... + 13205.

Almost surely, 2^22149900 is an apocalyptic number.

22149900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22149900 is an abundant number, since it is smaller than the sum of its proper divisors (47280552).

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

22149900 is a wasteful number, since it uses less digits than its factorization.

22149900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24631 (or 24621 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 22149900 is about 4706.3680264085. The cubic root of 22149900 is about 280.8388956761.

The spelling of 22149900 in words is "twenty-two million, one hundred forty-nine thousand, nine hundred".