22366620 has 72 divisors (see below), whose sum is σ = 68415984. Its totient is φ = 5914368.

The previous prime is 22366609. The next prime is 22366621. The reversal of 22366620 is 2666322.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22366621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24207 + ... + 25113.

It is an arithmetic number, because the mean of its divisors is an integer number (950222).

Almost surely, 2^22366620 is an apocalyptic number.

22366620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22366620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34207992).

22366620 is an abundant number, since it is smaller than the sum of its proper divisors (46049364).

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

22366620 is a wasteful number, since it uses less digits than its factorization.

22366620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059 (or 1054 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 22366620 is about 4729.3361056284. The cubic root of 22366620 is about 281.7518565577.

The spelling of 22366620 in words is "twenty-two million, three hundred sixty-six thousand, six hundred twenty".