22664280 has 32 divisors (see below), whose sum is σ = 67993200. Its totient is φ = 6043776.

The previous prime is 22664273. The next prime is 22664287. The reversal of 22664280 is 8246622.

It is an interprime number because it is at equal distance from previous prime (22664273) and next prime (22664287).

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

It is a zygodrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22664287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94315 + ... + 94554.

Almost surely, 2^22664280 is an apocalyptic number.

22664280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22664280 is an abundant number, since it is smaller than the sum of its proper divisors (45328920).

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

22664280 is a wasteful number, since it uses less digits than its factorization.

22664280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188883 (or 188879 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 22664280 is about 4760.7016289618. The cubic root of 22664280 is about 282.9962249826.

The spelling of 22664280 in words is "twenty-two million, six hundred sixty-four thousand, two hundred eighty".