22261449 has 32 divisors (see below), whose sum is σ = 36274176. Its totient is φ = 11854080.

The previous prime is 22261439. The next prime is 22261451. The reversal of 22261449 is 94416222.

It is not a de Polignac number, because 22261449 - 2⁵ = 22261417 is a prime.

It is a super-2 number, since 2×22261449² = 991144223159202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22261429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45094 + ... + 45584.

It is an arithmetic number, because the mean of its divisors is an integer number (1133568).

Almost surely, 2^22261449 is an apocalyptic number.

It is an amenable number.

22261449 is a deficient number, since it is larger than the sum of its proper divisors (14012727).

22261449 is a wasteful number, since it uses less digits than its factorization.

22261449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645.

The product of its digits is 6912, while the sum is 30.

The square root of 22261449 is about 4718.2040015243. The cubic root of 22261449 is about 281.3095502545.

The spelling of 22261449 in words is "twenty-two million, two hundred sixty-one thousand, four hundred forty-nine".