20895985 has 8 divisors (see below), whose sum is σ = 27354816. Its totient is φ = 15197040.

The previous prime is 20895929. The next prime is 20896013. The reversal of 20895985 is 58959802.

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

It is not a de Polignac number, because 20895985 - 2⁷ = 20895857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189909 + ... + 190018.

It is an arithmetic number, because the mean of its divisors is an integer number (3419352).

Almost surely, 2^20895985 is an apocalyptic number.

It is an amenable number.

20895985 is a deficient number, since it is larger than the sum of its proper divisors (6458831).

20895985 is a wasteful number, since it uses less digits than its factorization.

20895985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379943.

The product of its (nonzero) digits is 259200, while the sum is 46.

The square root of 20895985 is about 4571.2126399895. The cubic root of 20895985 is about 275.4361563650.

The spelling of 20895985 in words is "twenty million, eight hundred ninety-five thousand, nine hundred eighty-five".