22387642 has 8 divisors (see below), whose sum is σ = 34664832. Its totient is φ = 10832700.

The previous prime is 22387633. The next prime is 22387661. The reversal of 22387642 is 24678322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 22387598 and 22387607.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180484 + ... + 180607.

It is an arithmetic number, because the mean of its divisors is an integer number (4333104).

Almost surely, 2^22387642 is an apocalyptic number.

22387642 is a deficient number, since it is larger than the sum of its proper divisors (12277190).

22387642 is a wasteful number, since it uses less digits than its factorization.

22387642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361124.

The product of its digits is 32256, while the sum is 34.

The square root of 22387642 is about 4731.5580943279. The cubic root of 22387642 is about 281.8401001525.

It can be divided in two parts, 2238764 and 2, that multiplied together give a triangular number (4477528 = T₂₉₉₂).

The spelling of 22387642 in words is "twenty-two million, three hundred eighty-seven thousand, six hundred forty-two".