22053220 has 24 divisors (see below), whose sum is σ = 52928064. Its totient is φ = 7561056.

The previous prime is 22053211. The next prime is 22053223. The reversal of 22053220 is 2235022.

It is a junction number, because it is equal to n+sod(n) for n = 22053194 and 22053203.

It is not an unprimeable number, because it can be changed into a prime (22053223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78622 + ... + 78901.

It is an arithmetic number, because the mean of its divisors is an integer number (2205336).

Almost surely, 2^22053220 is an apocalyptic number.

22053220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22053220 is an abundant number, since it is smaller than the sum of its proper divisors (30874844).

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

22053220 is a wasteful number, since it uses less digits than its factorization.

22053220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157539 (or 157537 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 22053220 is about 4696.0856039898. The cubic root of 22053220 is about 280.4296973775.

Adding to 22053220 its reverse (2235022), we get a palindrome (24288242).

The spelling of 22053220 in words is "twenty-two million, fifty-three thousand, two hundred twenty".