16920995 has 16 divisors (see below), whose sum is σ = 24991680. Its totient is φ = 10710144.

The previous prime is 16920983. The next prime is 16921013. The reversal of 16920995 is 59902961.

It is a cyclic number.

It is not a de Polignac number, because 16920995 - 2⁴ = 16920979 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18140 + ... + 19049.

It is an arithmetic number, because the mean of its divisors is an integer number (1561980).

Almost surely, 2^16920995 is an apocalyptic number.

16920995 is a deficient number, since it is larger than the sum of its proper divisors (8070685).

16920995 is a wasteful number, since it uses less digits than its factorization.

16920995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37214.

The product of its (nonzero) digits is 43740, while the sum is 41.

The square root of 16920995 is about 4113.5137048514. The cubic root of 16920995 is about 256.7292186517.

The spelling of 16920995 in words is "sixteen million, nine hundred twenty thousand, nine hundred ninety-five".