15022224 has 90 divisors (see below), whose sum is σ = 48928230. Its totient is φ = 4290048.

The previous prime is 15022223. The next prime is 15022229. The reversal of 15022224 is 42222051.

It can be written as a sum of positive squares in only one way, i.e., 11289600 + 3732624 = 3360^2 + 1932^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 15022197 and 15022206.

It is not an unprimeable number, because it can be changed into a prime (15022223) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5992 + ... + 8120.

It is an arithmetic number, because the mean of its divisors is an integer number (543647).

Almost surely, 2^15022224 is an apocalyptic number.

15022224 is a gapful number since it is divisible by the number (14) 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 15022224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24464115).

15022224 is an abundant number, since it is smaller than the sum of its proper divisors (33906006).

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

15022224 is a wasteful number, since it uses less digits than its factorization.

15022224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157 (or 2141 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 15022224 is about 3875.8513903399. The cubic root of 15022224 is about 246.7429453242.

Adding to 15022224 its reverse (42222051), we get a palindrome (57244275).

The spelling of 15022224 in words is "fifteen million, twenty-two thousand, two hundred twenty-four".