15240413 has 4 divisors (see below), whose sum is σ = 16042560. Its totient is φ = 14438268.

The previous prime is 15240403. The next prime is 15240427. The reversal of 15240413 is 31404251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15240413 - 2⁸ = 15240157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15240403) 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 3 ways as a sum of consecutive naturals, for example, 401045 + ... + 401082.

It is an arithmetic number, because the mean of its divisors is an integer number (4010640).

Almost surely, 2^15240413 is an apocalyptic number.

It is an amenable number.

15240413 is a deficient number, since it is larger than the sum of its proper divisors (802147).

15240413 is an equidigital number, since it uses as much as digits as its factorization.

15240413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802146.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 15240413 is about 3903.8971554077. The cubic root of 15240413 is about 247.9318068228.

Adding to 15240413 its reverse (31404251), we get a palindrome (46644664).

The spelling of 15240413 in words is "fifteen million, two hundred forty thousand, four hundred thirteen".