22389642 has 32 divisors (see below), whose sum is σ = 54279360. Its totient is φ = 6784560.

The previous prime is 22389617. The next prime is 22389659. The reversal of 22389642 is 24698322.

22389642 is a `hidden beast` number, since 2 + 2 + 3 + 8 + 9 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 22389597 and 22389606.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18253 + ... + 19440.

It is an arithmetic number, because the mean of its divisors is an integer number (1696230).

Almost surely, 2^22389642 is an apocalyptic number.

22389642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22389642 is an abundant number, since it is smaller than the sum of its proper divisors (31889718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22389642 is a wasteful number, since it uses less digits than its factorization.

22389642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37715 (or 37709 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 22389642 is about 4731.7694364793. The cubic root of 22389642 is about 281.8484926311.

The spelling of 22389642 in words is "twenty-two million, three hundred eighty-nine thousand, six hundred forty-two".