22588020 has 216 divisors, whose sum is σ = 86270184. Its totient is φ = 4741632.

The previous prime is 22588009. The next prime is 22588037. The reversal of 22588020 is 2088522.

It can be written as a sum of positive squares in 4 ways, for example, as 4235364 + 18352656 = 2058^2 + 4284^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 114562 + ... + 114758.

It is an arithmetic number, because the mean of its divisors is an integer number (399399).

Almost surely, 2^22588020 is an apocalyptic number.

22588020 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 22588020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43135092).

22588020 is an abundant number, since it is smaller than the sum of its proper divisors (63682164).

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

22588020 is a wasteful number, since it uses less digits than its factorization.

22588020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 22588020 is about 4752.6855566090. The cubic root of 22588020 is about 282.6784629536.

The spelling of 22588020 in words is "twenty-two million, five hundred eighty-eight thousand, twenty".