22039538 has 4 divisors (see below), whose sum is σ = 33059310. Its totient is φ = 11019768.

The previous prime is 22039529. The next prime is 22039547. The reversal of 22039538 is 83593022.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (22039529) and next prime (22039547).

It can be written as a sum of positive squares in only one way, i.e., 21187609 + 851929 = 4603^2 + 923^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5509883 + ... + 5509886.

Almost surely, 2^22039538 is an apocalyptic number.

22039538 is a deficient number, since it is larger than the sum of its proper divisors (11019772).

22039538 is a wasteful number, since it uses less digits than its factorization.

22039538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11019771.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 22039538 is about 4694.6286328101. The cubic root of 22039538 is about 280.3716917460.

The spelling of 22039538 in words is "twenty-two million, thirty-nine thousand, five hundred thirty-eight".