15242438 has 12 divisors (see below), whose sum is σ = 24288612. Its totient is φ = 7172640.

The previous prime is 15242431. The next prime is 15242441. The reversal of 15242438 is 83424251.

It is a happy number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 15242438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15242431) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 12608 + ... + 13763.

It is an arithmetic number, because the mean of its divisors is an integer number (2024051).

Almost surely, 2^15242438 is an apocalyptic number.

15242438 is a deficient number, since it is larger than the sum of its proper divisors (9046174).

15242438 is a wasteful number, since it uses less digits than its factorization.

15242438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26407 (or 26390 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

The square root of 15242438 is about 3904.1565030106. The cubic root of 15242438 is about 247.9427872705.

Adding to 15242438 its reverse (83424251), we get a palindrome (98666689).

It can be divided in two parts, 1524243 and 8, that added together give a palindrome (1524251).

The spelling of 15242438 in words is "fifteen million, two hundred forty-two thousand, four hundred thirty-eight".