16920895 has 4 divisors (see below), whose sum is σ = 20305080. Its totient is φ = 13536712.

The previous prime is 16920859. The next prime is 16920901. The reversal of 16920895 is 59802961.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16920895 - 2⁹ = 16920383 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 1692085 + ... + 1692094.

It is an arithmetic number, because the mean of its divisors is an integer number (5076270).

Almost surely, 2^16920895 is an apocalyptic number.

16920895 is a deficient number, since it is larger than the sum of its proper divisors (3384185).

16920895 is an equidigital number, since it uses as much as digits as its factorization.

16920895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3384184.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 16920895 is about 4113.5015497748. The cubic root of 16920895 is about 256.7287129097.

The spelling of 16920895 in words is "sixteen million, nine hundred twenty thousand, eight hundred ninety-five".