22381922 has 4 divisors (see below), whose sum is σ = 33572886. Its totient is φ = 11190960.

The previous prime is 22381913. The next prime is 22381949. The reversal of 22381922 is 22918322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11485321 + 10896601 = 3389^2 + 3301^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5595479 + ... + 5595482.

Almost surely, 2^22381922 is an apocalyptic number.

22381922 is a deficient number, since it is larger than the sum of its proper divisors (11190964).

22381922 is a wasteful number, since it uses less digits than its factorization.

22381922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11190963.

The product of its digits is 3456, while the sum is 29.

The square root of 22381922 is about 4730.9536036617. The cubic root of 22381922 is about 281.8160949046.

The spelling of 22381922 in words is "twenty-two million, three hundred eighty-one thousand, nine hundred twenty-two".