22032739 has 4 divisors (see below), whose sum is σ = 22047624. Its totient is φ = 22017856.

The previous prime is 22032709. The next prime is 22032743. The reversal of 22032739 is 93723022.

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

It is a cyclic number.

It is not a de Polignac number, because 22032739 - 2⁷ = 22032611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22032709) 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, 4942 + ... + 8275.

It is an arithmetic number, because the mean of its divisors is an integer number (5511906).

Almost surely, 2^22032739 is an apocalyptic number.

22032739 is a deficient number, since it is larger than the sum of its proper divisors (14885).

22032739 is a wasteful number, since it uses less digits than its factorization.

22032739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14884.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 22032739 is about 4693.9044515201. The cubic root of 22032739 is about 280.3428580625.

Subtracting from 22032739 its product of nonzero digits (4536), we obtain a triangular number (22028203 = T₆₆₃₇).

The spelling of 22032739 in words is "twenty-two million, thirty-two thousand, seven hundred thirty-nine".