22154120 has 32 divisors (see below), whose sum is σ = 51197400. Its totient is φ = 8621568.

The previous prime is 22154081. The next prime is 22154131. The reversal of 22154120 is 2145122.

It can be written as a sum of positive squares in 4 ways, for example, as 14853316 + 7300804 = 3854^2 + 2702^2 .

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, 6005 + ... + 8964.

Almost surely, 2^22154120 is an apocalyptic number.

22154120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22154120 is an abundant number, since it is smaller than the sum of its proper divisors (29043280).

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

22154120 is a wasteful number, since it uses less digits than its factorization.

22154120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15017 (or 15013 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 22154120 is about 4706.8163337866. The cubic root of 22154120 is about 280.8567296902.

Adding to 22154120 its reverse (2145122), we get a palindrome (24299242).

The spelling of 22154120 in words is "twenty-two million, one hundred fifty-four thousand, one hundred twenty".