22448220 has 24 divisors (see below), whose sum is σ = 62855184. Its totient is φ = 5986176.

The previous prime is 22448219. The next prime is 22448243. The reversal of 22448220 is 2284422.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 187009 + ... + 187128.

It is an arithmetic number, because the mean of its divisors is an integer number (2618966).

Almost surely, 2^22448220 is an apocalyptic number.

22448220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22448220 is an abundant number, since it is smaller than the sum of its proper divisors (40406964).

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

22448220 is a wasteful number, since it uses less digits than its factorization.

22448220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374149 (or 374147 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 22448220 is about 4737.9552551707. The cubic root of 22448220 is about 282.0940785650.

The spelling of 22448220 in words is "twenty-two million, four hundred forty-eight thousand, two hundred twenty".