16338387 has 8 divisors (see below), whose sum is σ = 23460304. Its totient is φ = 10054368.

The previous prime is 16338383. The next prime is 16338401. The reversal of 16338387 is 78383361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16338387 - 2² = 16338383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 418933 = 16338387 / (1 + 6 + 3 + 3 + 8 + 3 + 8 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16338383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209428 + ... + 209505.

It is an arithmetic number, because the mean of its divisors is an integer number (2932538).

Almost surely, 2^16338387 is an apocalyptic number.

16338387 is a deficient number, since it is larger than the sum of its proper divisors (7121917).

16338387 is a wasteful number, since it uses less digits than its factorization.

16338387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418949.

The product of its digits is 72576, while the sum is 39.

The square root of 16338387 is about 4042.0770650743. The cubic root of 16338387 is about 253.7482522306.

The spelling of 16338387 in words is "sixteen million, three hundred thirty-eight thousand, three hundred eighty-seven".