22543530 has 32 divisors (see below), whose sum is σ = 57288384. Its totient is φ = 5657856.

The previous prime is 22543529. The next prime is 22543531. The reversal of 22543530 is 3534522.

It is an interprime number because it is at equal distance from previous prime (22543529) and next prime (22543531).

It is a self number, because there is not a number n which added to its sum of digits gives 22543530.

It is not an unprimeable number, because it can be changed into a prime (22543531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21592 + ... + 22611.

It is an arithmetic number, because the mean of its divisors is an integer number (1790262).

Almost surely, 2^22543530 is an apocalyptic number.

22543530 is an abundant number, since it is smaller than the sum of its proper divisors (34744854).

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

22543530 is a wasteful number, since it uses less digits than its factorization.

22543530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44230.

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 22543530 is about 4748.0027379942. The cubic root of 22543530 is about 282.4927504862.

The spelling of 22543530 in words is "twenty-two million, five hundred forty-three thousand, five hundred thirty".