22154214 has 16 divisors (see below), whose sum is σ = 44607600. Its totient is φ = 7334880.

The previous prime is 22154203. The next prime is 22154233. The reversal of 22154214 is 41245122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11497 + ... + 13284.

It is an arithmetic number, because the mean of its divisors is an integer number (2787975).

Almost surely, 2^22154214 is an apocalyptic number.

22154214 is an abundant number, since it is smaller than the sum of its proper divisors (22453386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22154214 is a wasteful number, since it uses less digits than its factorization.

22154214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24935.

The product of its digits is 640, while the sum is 21.

The square root of 22154214 is about 4706.8263192941. The cubic root of 22154214 is about 280.8571269150.

Adding to 22154214 its reverse (41245122), we get a palindrome (63399336).

The spelling of 22154214 in words is "twenty-two million, one hundred fifty-four thousand, two hundred fourteen".