16892993 has 8 divisors (see below), whose sum is σ = 18820200. Its totient is φ = 15055488.

The previous prime is 16892989. The next prime is 16892999. The reversal of 16892993 is 39929861.

It can be written as a sum of positive squares in 4 ways, for example, as 1620529 + 15272464 = 1273^2 + 3908^2 .

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 16892993 - 2² = 16892989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16892999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22028 + ... + 22781.

It is an arithmetic number, because the mean of its divisors is an integer number (2352525).

Almost surely, 2^16892993 is an apocalyptic number.

16892993 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16892993 is a deficient number, since it is larger than the sum of its proper divisors (1927207).

16892993 is a wasteful number, since it uses less digits than its factorization.

16892993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44851.

The product of its digits is 209952, while the sum is 47.

The square root of 16892993 is about 4110.1086360338. The cubic root of 16892993 is about 256.5875228707.

The spelling of 16892993 in words is "sixteen million, eight hundred ninety-two thousand, nine hundred ninety-three".