15142224 has 40 divisors (see below), whose sum is σ = 39372480. Its totient is φ = 5014528.

The previous prime is 15142219. The next prime is 15142249. The reversal of 15142224 is 42224151.

It is a self number, because there is not a number n which added to its sum of digits gives 15142224.

It is a congruent 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, 7072 + ... + 8960.

It is an arithmetic number, because the mean of its divisors is an integer number (984312).

Almost surely, 2^15142224 is an apocalyptic number.

It is an amenable number.

15142224 is an abundant number, since it is smaller than the sum of its proper divisors (24230256).

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

15142224 is a wasteful number, since it uses less digits than its factorization.

15142224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067 (or 2061 counting only the distinct ones).

The product of its digits is 640, while the sum is 21.

The square root of 15142224 is about 3891.3010677664. The cubic root of 15142224 is about 247.3982113829.

Adding to 15142224 its reverse (42224151), we get a palindrome (57366375).

The spelling of 15142224 in words is "fifteen million, one hundred forty-two thousand, two hundred twenty-four".