15222200 has 96 divisors (see below), whose sum is σ = 41247360. Its totient is φ = 5116800.

The previous prime is 15222197. The next prime is 15222223. The reversal of 15222200 is 222251.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 116135 + ... + 116265.

It is an arithmetic number, because the mean of its divisors is an integer number (429660).

Almost surely, 2^15222200 is an apocalyptic number.

15222200 is a gapful number since it is divisible by the number (10) 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 15222200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20623680).

15222200 is an abundant number, since it is smaller than the sum of its proper divisors (26025160).

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

15222200 is a wasteful number, since it uses less digits than its factorization.

15222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 15222200 is about 3901.5637890466. The cubic root of 15222200 is about 247.8330041204.

Adding to 15222200 its reverse (222251), we get a palindrome (15444451).

The spelling of 15222200 in words is "fifteen million, two hundred twenty-two thousand, two hundred".