16899894 has 64 divisors (see below), whose sum is σ = 42785280. Its totient is φ = 4894560.

The previous prime is 16899889. The next prime is 16899959. The reversal of 16899894 is 49899861.

It is a super-2 number, since 2×16899894² = 571212834422472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16899894.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13044 + ... + 14280.

It is an arithmetic number, because the mean of its divisors is an integer number (668520).

Almost surely, 2^16899894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16899894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21392640).

16899894 is an abundant number, since it is smaller than the sum of its proper divisors (25885386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16899894 is a wasteful number, since it uses less digits than its factorization.

16899894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282 (or 1276 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 16899894 is about 4110.9480658359. The cubic root of 16899894 is about 256.6224578569.

The spelling of 16899894 in words is "sixteen million, eight hundred ninety-nine thousand, eight hundred ninety-four".