15427047 has 4 divisors (see below), whose sum is σ = 20569400. Its totient is φ = 10284696.

The previous prime is 15427033. The next prime is 15427051. The reversal of 15427047 is 74072451.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 15427047 - 2⁷ = 15426919 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 (15427547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2571172 + ... + 2571177.

It is an arithmetic number, because the mean of its divisors is an integer number (5142350).

Almost surely, 2^15427047 is an apocalyptic number.

15427047 is a deficient number, since it is larger than the sum of its proper divisors (5142353).

15427047 is an equidigital number, since it uses as much as digits as its factorization.

15427047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5142352.

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 15427047 is about 3927.7279691954. The cubic root of 15427047 is about 248.9397605927.

Adding to 15427047 its reverse (74072451), we get a palindrome (89499498).

The spelling of 15427047 in words is "fifteen million, four hundred twenty-seven thousand, forty-seven".