22328649 has 64 divisors (see below), whose sum is σ = 40468480. Its totient is φ = 11897280.

The previous prime is 22328627. The next prime is 22328659. The reversal of 22328649 is 94682322.

22328649 is a `hidden beast` number, since 2 + 2 + 3 + 2 + 8 + 649 = 666.

It is not a de Polignac number, because 22328649 - 2⁸ = 22328393 is a prime.

It is a super-3 number, since 3×22328649³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22328659) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 216732 + ... + 216834.

It is an arithmetic number, because the mean of its divisors is an integer number (632320).

Almost surely, 2^22328649 is an apocalyptic number.

It is an amenable number.

22328649 is a deficient number, since it is larger than the sum of its proper divisors (18139831).

22328649 is a wasteful number, since it uses less digits than its factorization.

22328649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 181 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 22328649 is about 4725.3199891648. The cubic root of 22328649 is about 281.5923262762.

The spelling of 22328649 in words is "twenty-two million, three hundred twenty-eight thousand, six hundred forty-nine".