16339881 has 8 divisors (see below), whose sum is σ = 22002624. Its totient is φ = 10785200.

The previous prime is 16339877. The next prime is 16339889. The reversal of 16339881 is 18893361.

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

It is a cyclic number.

It is not a de Polignac number, because 16339881 - 2² = 16339877 is a prime.

It is a super-2 number, since 2×16339881² = 533983422188322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16339889) 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, 26661 + ... + 27266.

It is an arithmetic number, because the mean of its divisors is an integer number (2750328).

Almost surely, 2^16339881 is an apocalyptic number.

It is an amenable number.

16339881 is a deficient number, since it is larger than the sum of its proper divisors (5662743).

16339881 is a wasteful number, since it uses less digits than its factorization.

16339881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54031.

The product of its digits is 31104, while the sum is 39.

The square root of 16339881 is about 4042.2618668265. The cubic root of 16339881 is about 253.7559863342.

The spelling of 16339881 in words is "sixteen million, three hundred thirty-nine thousand, eight hundred eighty-one".