15243427 has 4 divisors (see below), whose sum is σ = 15251440. Its totient is φ = 15235416.

The previous prime is 15243409. The next prime is 15243439. The reversal of 15243427 is 72434251.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 15243427 - 2¹⁹ = 14719139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15243395 and 15243404.

It is not an unprimeable number, because it can be changed into a prime (15243467) 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 3 ways as a sum of consecutive naturals, for example, 658 + ... + 5560.

It is an arithmetic number, because the mean of its divisors is an integer number (3812860).

Almost surely, 2^15243427 is an apocalyptic number.

15243427 is a deficient number, since it is larger than the sum of its proper divisors (8013).

15243427 is an equidigital number, since it uses as much as digits as its factorization.

15243427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8012.

The product of its digits is 6720, while the sum is 28.

The square root of 15243427 is about 3904.2831608376. The cubic root of 15243427 is about 247.9481497135.

Adding to 15243427 its reverse (72434251), we get a palindrome (87677678).

The spelling of 15243427 in words is "fifteen million, two hundred forty-three thousand, four hundred twenty-seven".