22216860 has 36 divisors (see below), whose sum is σ = 67391688. Its totient is φ = 5924448.

The previous prime is 22216849. The next prime is 22216861. The reversal of 22216860 is 6861222.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22216861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61534 + ... + 61893.

Almost surely, 2^22216860 is an apocalyptic number.

22216860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22216860 is an abundant number, since it is smaller than the sum of its proper divisors (45174828).

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

22216860 is a wasteful number, since it uses less digits than its factorization.

22216860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123442 (or 123437 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 22216860 is about 4713.4764240420. The cubic root of 22216860 is about 281.1216065812.

The spelling of 22216860 in words is "twenty-two million, two hundred sixteen thousand, eight hundred sixty".