20895056 has 80 divisors (see below), whose sum is σ = 50663424. Its totient is φ = 8128512.

The previous prime is 20895029. The next prime is 20895071. The reversal of 20895056 is 65059802.

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 15 ways as a sum of consecutive naturals, for example, 164465 + ... + 164591.

Almost surely, 2^20895056 is an apocalyptic number.

20895056 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20895056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25331712).

20895056 is an abundant number, since it is smaller than the sum of its proper divisors (29768368).

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

20895056 is a wasteful number, since it uses less digits than its factorization.

20895056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 20895056 is about 4571.1110246854. Note that the first 3 decimals coincide. The cubic root of 20895056 is about 275.4320744967.

The spelling of 20895056 in words is "twenty million, eight hundred ninety-five thousand, fifty-six".