22138232 has 8 divisors (see below), whose sum is σ = 41509200. Its totient is φ = 11069112.

The previous prime is 22138229. The next prime is 22138243. The reversal of 22138232 is 23283122.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 22138198 and 22138207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1383632 + ... + 1383647.

It is an arithmetic number, because the mean of its divisors is an integer number (5188650).

Almost surely, 2^22138232 is an apocalyptic number.

It is an amenable number.

22138232 is a deficient number, since it is larger than the sum of its proper divisors (19370968).

22138232 is a wasteful number, since it uses less digits than its factorization.

22138232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2767285 (or 2767281 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 22138232 is about 4705.1282660518. The cubic root of 22138232 is about 280.7895741023.

The spelling of 22138232 in words is "twenty-two million, one hundred thirty-eight thousand, two hundred thirty-two".