22158118 has 8 divisors (see below), whose sum is σ = 34309440. Its totient is φ = 10721640.

The previous prime is 22158091. The next prime is 22158119. The reversal of 22158118 is 81185122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22158119) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 178633 + ... + 178756.

It is an arithmetic number, because the mean of its divisors is an integer number (4288680).

Almost surely, 2^22158118 is an apocalyptic number.

22158118 is a deficient number, since it is larger than the sum of its proper divisors (12151322).

22158118 is a wasteful number, since it uses less digits than its factorization.

22158118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357422.

The product of its digits is 1280, while the sum is 28.

The square root of 22158118 is about 4707.2410178362. The cubic root of 22158118 is about 280.8736234277.

The spelling of 22158118 in words is "twenty-two million, one hundred fifty-eight thousand, one hundred eighteen".