22664550 has 48 divisors (see below), whose sum is σ = 57152592. Its totient is φ = 5942400.

The previous prime is 22664533. The next prime is 22664567. The reversal of 22664550 is 5546622.

It is an interprime number because it is at equal distance from previous prime (22664533) and next prime (22664567).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7912 + ... + 10388.

It is an arithmetic number, because the mean of its divisors is an integer number (1190679).

Almost surely, 2^22664550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22664550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28576296).

22664550 is an abundant number, since it is smaller than the sum of its proper divisors (34488042).

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

22664550 is a wasteful number, since it uses less digits than its factorization.

22664550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553 (or 2548 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 22664550 is about 4760.7299860421. The cubic root of 22664550 is about 282.9973487580.

The spelling of 22664550 in words is "twenty-two million, six hundred sixty-four thousand, five hundred fifty".