15338971 has 4 divisors (see below), whose sum is σ = 15490944. Its totient is φ = 15187000.

The previous prime is 15338951. The next prime is 15338977. The reversal of 15338971 is 17983351.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15338971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15338971.

It is not an unprimeable number, because it can be changed into a prime (15338977) 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, 75835 + ... + 76036.

It is an arithmetic number, because the mean of its divisors is an integer number (3872736).

Almost surely, 2^15338971 is an apocalyptic number.

15338971 is a deficient number, since it is larger than the sum of its proper divisors (151973).

15338971 is a wasteful number, since it uses less digits than its factorization.

15338971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151972.

The product of its digits is 22680, while the sum is 37.

The square root of 15338971 is about 3916.4998404187. The cubic root of 15338971 is about 248.4651077082.

The spelling of 15338971 in words is "fifteen million, three hundred thirty-eight thousand, nine hundred seventy-one".