15442216 has 32 divisors (see below), whose sum is σ = 30343680. Its totient is φ = 7358400.

The previous prime is 15442187. The next prime is 15442249. The reversal of 15442216 is 61224451.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 17170 + ... + 18046.

It is an arithmetic number, because the mean of its divisors is an integer number (948240).

Almost surely, 2^15442216 is an apocalyptic number.

It is an amenable number.

15442216 is a deficient number, since it is larger than the sum of its proper divisors (14901464).

15442216 is a wasteful number, since it uses less digits than its factorization.

15442216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985 (or 981 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 15442216 is about 3929.6585093364. The cubic root of 15442216 is about 249.0213257865.

Adding to 15442216 its reverse (61224451), we get a palindrome (76666667).

The spelling of 15442216 in words is "fifteen million, four hundred forty-two thousand, two hundred sixteen".