22738539 has 4 divisors (see below), whose sum is σ = 30318056. Its totient is φ = 15159024.

The previous prime is 22738501. The next prime is 22738567. The reversal of 22738539 is 93583722.

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

It is a de Polignac number, because none of the positive numbers 2^k-22738539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22738497 and 22738506.

It is not an unprimeable number, because it can be changed into a prime (22738039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3789754 + ... + 3789759.

It is an arithmetic number, because the mean of its divisors is an integer number (7579514).

Almost surely, 2^22738539 is an apocalyptic number.

22738539 is a deficient number, since it is larger than the sum of its proper divisors (7579517).

22738539 is an equidigital number, since it uses as much as digits as its factorization.

22738539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7579516.

The product of its digits is 90720, while the sum is 39.

The square root of 22738539 is about 4768.4944164799. The cubic root of 22738539 is about 283.3049649414.

The spelling of 22738539 in words is "twenty-two million, seven hundred thirty-eight thousand, five hundred thirty-nine".