22159700 has 72 divisors (see below), whose sum is σ = 51559200. Its totient is φ = 8242560.

The previous prime is 22159691. The next prime is 22159759. The reversal of 22159700 is 795122.

It is a self number, because there is not a number n which added to its sum of digits gives 22159700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203246 + ... + 203354.

It is an arithmetic number, because the mean of its divisors is an integer number (716100).

Almost surely, 2^22159700 is an apocalyptic number.

22159700 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 22159700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25779600).

22159700 is an abundant number, since it is smaller than the sum of its proper divisors (29399500).

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

22159700 is a wasteful number, since it uses less digits than its factorization.

22159700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 22159700 is about 4707.4090538214. The cubic root of 22159700 is about 280.8803076822.

The spelling of 22159700 in words is "twenty-two million, one hundred fifty-nine thousand, seven hundred".