22616220 has 48 divisors (see below), whose sum is σ = 69084288. Its totient is φ = 5482560.

The previous prime is 22616207. The next prime is 22616227. The reversal of 22616220 is 2261622.

It is a super-2 number, since 2×22616220² = 1022986814176800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22616227) 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, 16474 + ... + 17793.

It is an arithmetic number, because the mean of its divisors is an integer number (1439256).

Almost surely, 2^22616220 is an apocalyptic number.

22616220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22616220 is an abundant number, since it is smaller than the sum of its proper divisors (46468068).

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

22616220 is a wasteful number, since it uses less digits than its factorization.

22616220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34290 (or 34288 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 22616220 is about 4755.6513749433. The cubic root of 22616220 is about 282.7960506188.

Adding to 22616220 its reverse (2261622), we get a palindrome (24877842).

The spelling of 22616220 in words is "twenty-two million, six hundred sixteen thousand, two hundred twenty".