15122224 has 80 divisors (see below), whose sum is σ = 34372800. Its totient is φ = 6386688.

The previous prime is 15122213. The next prime is 15122267. The reversal of 15122224 is 42222151.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138682 + ... + 138790.

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

Almost surely, 2^15122224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15122224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17186400).

15122224 is an abundant number, since it is smaller than the sum of its proper divisors (19250576).

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

15122224 is a wasteful number, since it uses less digits than its factorization.

15122224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 176 counting only the distinct ones).

The product of its digits is 320, while the sum is 19.

The square root of 15122224 is about 3888.7303840714. The cubic root of 15122224 is about 247.2892413869.

Adding to 15122224 its reverse (42222151), we get a palindrome (57344375).

The spelling of 15122224 in words is "fifteen million, one hundred twenty-two thousand, two hundred twenty-four".