15240245 has 16 divisors (see below), whose sum is σ = 19485360. Its totient is φ = 11403264.

The previous prime is 15240229. The next prime is 15240257. The reversal of 15240245 is 54204251.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2114116 + 13126129 = 1454^2 + 3623^2 .

It is a cyclic number.

It is not a de Polignac number, because 15240245 - 2⁴ = 15240229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15240245.

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 15 ways as a sum of consecutive naturals, for example, 15941 + ... + 16869.

It is an arithmetic number, because the mean of its divisors is an integer number (1217835).

Almost surely, 2^15240245 is an apocalyptic number.

It is an amenable number.

15240245 is a deficient number, since it is larger than the sum of its proper divisors (4245115).

15240245 is a wasteful number, since it uses less digits than its factorization.

15240245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 15240245 is about 3903.8756383881. The cubic root of 15240245 is about 247.9308958086.

Adding to 15240245 its reverse (54204251), we get a palindrome (69444496).

The spelling of 15240245 in words is "fifteen million, two hundred forty thousand, two hundred forty-five".