15122226 has 16 divisors (see below), whose sum is σ = 34565184. Its totient is φ = 4320624.

The previous prime is 15122213. The next prime is 15122267. The reversal of 15122226 is 62222151.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179985 + ... + 180068.

It is an arithmetic number, because the mean of its divisors is an integer number (2160324).

Almost surely, 2^15122226 is an apocalyptic number.

15122226 is an abundant number, since it is smaller than the sum of its proper divisors (19442958).

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

15122226 is a wasteful number, since it uses less digits than its factorization.

15122226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360065.

The product of its digits is 480, while the sum is 21.

The square root of 15122226 is about 3888.7306412247. The cubic root of 15122226 is about 247.2892522887.

Adding to 15122226 its reverse (62222151), we get a palindrome (77344377).

The spelling of 15122226 in words is "fifteen million, one hundred twenty-two thousand, two hundred twenty-six".