16381346 has 24 divisors (see below), whose sum is σ = 26258580. Its totient is φ = 7652736.

The previous prime is 16381331. The next prime is 16381381. The reversal of 16381346 is 64318361.

It can be written as a sum of positive squares in 6 ways, for example, as 11296321 + 5085025 = 3361^2 + 2255^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224366 + ... + 224438.

Almost surely, 2^16381346 is an apocalyptic number.

16381346 is a deficient number, since it is larger than the sum of its proper divisors (9877234).

16381346 is an equidigital number, since it uses as much as digits as its factorization.

16381346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 157 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 16381346 is about 4047.3875524837. The cubic root of 16381346 is about 253.9704535041.

The spelling of 16381346 in words is "sixteen million, three hundred eighty-one thousand, three hundred forty-six".