22238580 has 96 divisors (see below), whose sum is σ = 76656384. Its totient is φ = 4690944.

The previous prime is 22238551. The next prime is 22238581. The reversal of 22238580 is 8583222.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22238581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3424 + ... + 7496.

It is an arithmetic number, because the mean of its divisors is an integer number (798504).

Almost surely, 2^22238580 is an apocalyptic number.

22238580 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 22238580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38328192).

22238580 is an abundant number, since it is smaller than the sum of its proper divisors (54417804).

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

22238580 is a wasteful number, since it uses less digits than its factorization.

22238580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4105 (or 4103 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 22238580 is about 4715.7798930824. The cubic root of 22238580 is about 281.2131882685.

The spelling of 22238580 in words is "twenty-two million, two hundred thirty-eight thousand, five hundred eighty".