16293994 has 8 divisors (see below), whose sum is σ = 24465060. Its totient is φ = 8138976.

The previous prime is 16293989. The next prime is 16294009. The reversal of 16293994 is 49939261.

It can be written as a sum of positive squares in 2 ways, for example, as 16281225 + 12769 = 4035^2 + 113^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 16293994.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1029 + ... + 5800.

Almost surely, 2^16293994 is an apocalyptic number.

16293994 is a deficient number, since it is larger than the sum of its proper divisors (8171066).

16293994 is a wasteful number, since it uses less digits than its factorization.

16293994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8024.

The product of its digits is 104976, while the sum is 43.

The square root of 16293994 is about 4036.5819699345. The cubic root of 16293994 is about 253.5182241384.

The spelling of 16293994 in words is "sixteen million, two hundred ninety-three thousand, nine hundred ninety-four".