22381822 has 4 divisors (see below), whose sum is σ = 33572736. Its totient is φ = 11190910.

The previous prime is 22381817. The next prime is 22381831. The reversal of 22381822 is 22818322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22818322 = 2 ⋅11409161.

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, 5595454 + ... + 5595457.

It is an arithmetic number, because the mean of its divisors is an integer number (8393184).

Almost surely, 2^22381822 is an apocalyptic number.

22381822 is a deficient number, since it is larger than the sum of its proper divisors (11190914).

22381822 is a wasteful number, since it uses less digits than its factorization.

22381822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11190913.

The product of its digits is 3072, while the sum is 28.

The square root of 22381822 is about 4730.9430349561. The cubic root of 22381822 is about 281.8156751961.

The spelling of 22381822 in words is "twenty-two million, three hundred eighty-one thousand, eight hundred twenty-two".