15240117 has 16 divisors (see below), whose sum is σ = 20699712. Its totient is φ = 9972480.

The previous prime is 15240107. The next prime is 15240131. The reversal of 15240117 is 71104251.

It is a happy number.

It is not a de Polignac number, because 15240117 - 2⁷ = 15239989 is a prime.

It is a super-2 number, since 2×15240117² = 464522332347378, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15240093 and 15240102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15240107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63117 + ... + 63357.

It is an arithmetic number, because the mean of its divisors is an integer number (1293732).

Almost surely, 2^15240117 is an apocalyptic number.

It is an amenable number.

15240117 is a deficient number, since it is larger than the sum of its proper divisors (5459595).

15240117 is a wasteful number, since it uses less digits than its factorization.

15240117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 15240117 is about 3903.8592443888. The cubic root of 15240117 is about 247.9302016981.

Adding to 15240117 its reverse (71104251), we get a palindrome (86344368).

The spelling of 15240117 in words is "fifteen million, two hundred forty thousand, one hundred seventeen".