22039694 has 4 divisors (see below), whose sum is σ = 33059544. Its totient is φ = 11019846.

The previous prime is 22039643. The next prime is 22039697. The reversal of 22039694 is 49693022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49693022 = 2 ⋅24846511.

It is a super-2 number, since 2×22039694² = 971496223227272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22039697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5509922 + ... + 5509925.

It is an arithmetic number, because the mean of its divisors is an integer number (8264886).

Almost surely, 2^22039694 is an apocalyptic number.

22039694 is a deficient number, since it is larger than the sum of its proper divisors (11019850).

22039694 is a wasteful number, since it uses less digits than its factorization.

22039694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11019849.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 22039694 is about 4694.6452475134. The cubic root of 22039694 is about 280.3723532523.

The spelling of 22039694 in words is "twenty-two million, thirty-nine thousand, six hundred ninety-four".