22943538 has 18 divisors (see below), whose sum is σ = 49755069. Its totient is φ = 7641072.

The previous prime is 22943537. The next prime is 22943539. The reversal of 22943538 is 83534922.

It is an interprime number because it is at equal distance from previous prime (22943537) and next prime (22943539).

It can be written as a sum of positive squares in 2 ways, for example, as 17867529 + 5076009 = 4227^2 + 2253^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3387.

It is not an unprimeable number, because it can be changed into a prime (22943537) 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 8 ways as a sum of consecutive naturals, for example, 19758 + ... + 20886.

Almost surely, 2^22943538 is an apocalyptic number.

22943538 is an abundant number, since it is smaller than the sum of its proper divisors (26811531).

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

22943538 is an equidigital number, since it uses as much as digits as its factorization.

22943538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266 (or 1134 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 22943538 is about 4789.9413357577. The cubic root of 22943538 is about 284.1537965503.

It can be divided in two parts, 2294 and 3538, that added together give a cube (5832 = 18³).

The spelling of 22943538 in words is "twenty-two million, nine hundred forty-three thousand, five hundred thirty-eight".