22165480 has 16 divisors (see below), whose sum is σ = 49872420. Its totient is φ = 8866176.

The previous prime is 22165463. The next prime is 22165487. The reversal of 22165480 is 8456122.

It can be written as a sum of positive squares in 2 ways, for example, as 22146436 + 19044 = 4706^2 + 138^2 .

It is not an unprimeable number, because it can be changed into a prime (22165487) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 277029 + ... + 277108.

Almost surely, 2^22165480 is an apocalyptic number.

22165480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22165480 is an abundant number, since it is smaller than the sum of its proper divisors (27706940).

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

22165480 is a wasteful number, since it uses less digits than its factorization.

22165480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554148 (or 554144 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 22165480 is about 4708.0229396213. The cubic root of 22165480 is about 280.9047265905.

The spelling of 22165480 in words is "twenty-two million, one hundred sixty-five thousand, four hundred eighty".