15222044 has 12 divisors (see below), whose sum is σ = 27796944. Its totient is φ = 7280064.

The previous prime is 15222041. The next prime is 15222049. The reversal of 15222044 is 44022251.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15222041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82637 + ... + 82820.

It is an arithmetic number, because the mean of its divisors is an integer number (2316412).

Almost surely, 2^15222044 is an apocalyptic number.

It is an amenable number.

15222044 is a deficient number, since it is larger than the sum of its proper divisors (12574900).

15222044 is a wasteful number, since it uses less digits than its factorization.

15222044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165484 (or 165482 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 15222044 is about 3901.5437970116. The cubic root of 15222044 is about 247.8321575043.

Adding to 15222044 its reverse (44022251), we get a palindrome (59244295).

The spelling of 15222044 in words is "fifteen million, two hundred twenty-two thousand, forty-four".