22537530 has 48 divisors (see below), whose sum is σ = 59439744. Its totient is φ = 5923680.

The previous prime is 22537523. The next prime is 22537531. The reversal of 22537530 is 3573522.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22537494 and 22537503.

It is not an unprimeable number, because it can be changed into a prime (22537531) 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, 4627 + ... + 8153.

It is an arithmetic number, because the mean of its divisors is an integer number (1238328).

Almost surely, 2^22537530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22537530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29719872).

22537530 is an abundant number, since it is smaller than the sum of its proper divisors (36902214).

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

22537530 is a wasteful number, since it uses less digits than its factorization.

22537530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3611 (or 3608 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 27.

The square root of 22537530 is about 4747.3708513239. The cubic root of 22537530 is about 282.4676862823.

The spelling of 22537530 in words is "twenty-two million, five hundred thirty-seven thousand, five hundred thirty".