22389742 has 4 divisors (see below), whose sum is σ = 33584616. Its totient is φ = 11194870.

The previous prime is 22389727. The next prime is 22389751. The reversal of 22389742 is 24798322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24798322 = 2 ⋅12399161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5597434 + ... + 5597437.

It is an arithmetic number, because the mean of its divisors is an integer number (8396154).

Almost surely, 2^22389742 is an apocalyptic number.

22389742 is a deficient number, since it is larger than the sum of its proper divisors (11194874).

22389742 is a wasteful number, since it uses less digits than its factorization.

22389742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11194873.

The product of its digits is 48384, while the sum is 37.

The square root of 22389742 is about 4731.7800033391. The cubic root of 22389742 is about 281.8489122419.

The spelling of 22389742 in words is "twenty-two million, three hundred eighty-nine thousand, seven hundred forty-two".