22520949 has 32 divisors (see below), whose sum is σ = 34214400. Its totient is φ = 13056960.

The previous prime is 22520941. The next prime is 22520957. The reversal of 22520949 is 94902522.

It is an interprime number because it is at equal distance from previous prime (22520941) and next prime (22520957).

It is not a de Polignac number, because 22520949 - 2³ = 22520941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22520941) 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, 83587 + ... + 83855.

It is an arithmetic number, because the mean of its divisors is an integer number (1069200).

Almost surely, 2^22520949 is an apocalyptic number.

22520949 is the 2537-th nonagonal number.

It is an amenable number.

22520949 is a deficient number, since it is larger than the sum of its proper divisors (11693451).

22520949 is a wasteful number, since it uses less digits than its factorization.

22520949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 22520949 is about 4745.6241949822. The cubic root of 22520949 is about 282.3983982139.

The spelling of 22520949 in words is "twenty-two million, five hundred twenty thousand, nine hundred forty-nine".