15338691 has 6 divisors (see below), whose sum is σ = 22155900. Its totient is φ = 10225788.

The previous prime is 15338663. The next prime is 15338693. The reversal of 15338691 is 19683351.

It is a happy number.

It is not a de Polignac number, because 15338691 - 2⁷ = 15338563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15338693) 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, 852141 + ... + 852158.

It is an arithmetic number, because the mean of its divisors is an integer number (3692650).

Almost surely, 2^15338691 is an apocalyptic number.

15338691 is a deficient number, since it is larger than the sum of its proper divisors (6817209).

15338691 is a wasteful number, since it uses less digits than its factorization.

15338691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704305 (or 1704302 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 15338691 is about 3916.4640940522. The cubic root of 15338691 is about 248.4635958585.

The spelling of 15338691 in words is "fifteen million, three hundred thirty-eight thousand, six hundred ninety-one".