23138222 has 4 divisors (see below), whose sum is σ = 34707336. Its totient is φ = 11569110.

The previous prime is 23138197. The next prime is 23138237. The reversal of 23138222 is 22283132.

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

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, 5784554 + ... + 5784557.

It is an arithmetic number, because the mean of its divisors is an integer number (8676834).

Almost surely, 2^23138222 is an apocalyptic number.

23138222 is a deficient number, since it is larger than the sum of its proper divisors (11569114).

23138222 is a wasteful number, since it uses less digits than its factorization.

23138222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11569113.

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

The square root of 23138222 is about 4810.2205770630. The cubic root of 23138222 is about 284.9552489497.

The spelling of 23138222 in words is "twenty-three million, one hundred thirty-eight thousand, two hundred twenty-two".