22490949 has 16 divisors (see below), whose sum is σ = 34195392. Its totient is φ = 13026048.

The previous prime is 22490939. The next prime is 22490953. The reversal of 22490949 is 94909422.

It is not a de Polignac number, because 22490949 - 2⁵ = 22490917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22490939) 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, 16299 + ... + 17624.

It is an arithmetic number, because the mean of its divisors is an integer number (2137212).

Almost surely, 2^22490949 is an apocalyptic number.

It is an amenable number.

22490949 is a deficient number, since it is larger than the sum of its proper divisors (11704443).

22490949 is a wasteful number, since it uses less digits than its factorization.

22490949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33956.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 22490949 is about 4742.4623351166. The cubic root of 22490949 is about 282.2729488446.

The spelling of 22490949 in words is "twenty-two million, four hundred ninety thousand, nine hundred forty-nine".