22228860 has 192 divisors, whose sum is σ = 73543680. Its totient is φ = 4976640.

The previous prime is 22228859. The next prime is 22228873. The reversal of 22228860 is 6882222.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 600762 + ... + 600798.

It is an arithmetic number, because the mean of its divisors is an integer number (383040).

Almost surely, 2^22228860 is an apocalyptic number.

22228860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22228860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36771840).

22228860 is an abundant number, since it is smaller than the sum of its proper divisors (51314820).

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

22228860 is a wasteful number, since it uses less digits than its factorization.

22228860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 22228860 is about 4714.7491979956. The cubic root of 22228860 is about 281.1722115736.

The spelling of 22228860 in words is "twenty-two million, two hundred twenty-eight thousand, eight hundred sixty".