20995336 has 16 divisors (see below), whose sum is σ = 39479040. Its totient is φ = 10467600.

The previous prime is 20995307. The next prime is 20995349. The reversal of 20995336 is 63359902.

It is a junction number, because it is equal to n+sod(n) for n = 20995295 and 20995304.

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, 640 + ... + 6511.

It is an arithmetic number, because the mean of its divisors is an integer number (2467440).

Almost surely, 2^20995336 is an apocalyptic number.

It is an amenable number.

20995336 is a deficient number, since it is larger than the sum of its proper divisors (18483704).

20995336 is a wasteful number, since it uses less digits than its factorization.

20995336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7524 (or 7520 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 37.

The square root of 20995336 is about 4582.0667825775. The cubic root of 20995336 is about 275.8719913284.

The spelling of 20995336 in words is "twenty million, nine hundred ninety-five thousand, three hundred thirty-six".