20985296 has 20 divisors (see below), whose sum is σ = 40821792. Its totient is φ = 10450656.

The previous prime is 20985287. The next prime is 20985301. The reversal of 20985296 is 69258902.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1715 + ... + 6701.

Almost surely, 2^20985296 is an apocalyptic number.

It is an amenable number.

20985296 is a deficient number, since it is larger than the sum of its proper divisors (19836496).

20985296 is a wasteful number, since it uses less digits than its factorization.

20985296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5258 (or 5252 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 20985296 is about 4580.9710760929. The cubic root of 20985296 is about 275.8280101889.

The spelling of 20985296 in words is "twenty million, nine hundred eighty-five thousand, two hundred ninety-six".