22160220 has 48 divisors (see below), whose sum is σ = 62324640. Its totient is φ = 5883136.

The previous prime is 22160219. The next prime is 22160221. The reversal of 22160220 is 2206122.

It is an interprime number because it is at equal distance from previous prime (22160219) and next prime (22160221).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22160220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22160221) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 15454 + ... + 16826.

It is an arithmetic number, because the mean of its divisors is an integer number (1298430).

Almost surely, 2^22160220 is an apocalyptic number.

22160220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22160220 is an abundant number, since it is smaller than the sum of its proper divisors (40164420).

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

22160220 is a wasteful number, since it uses less digits than its factorization.

22160220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654 (or 1652 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 22160220 is about 4707.4642855788. The cubic root of 22160220 is about 280.8825047128.

Adding to 22160220 its reverse (2206122), we get a palindrome (24366342).

The spelling of 22160220 in words is "twenty-two million, one hundred sixty thousand, two hundred twenty".