20963826 has 32 divisors (see below), whose sum is σ = 50171520. Its totient is φ = 6450192.

The previous prime is 20963807. The next prime is 20963837. The reversal of 20963826 is 62836902.

It is a congruent number.

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, 14230 + ... + 15633.

It is an arithmetic number, because the mean of its divisors is an integer number (1567860).

Almost surely, 2^20963826 is an apocalyptic number.

20963826 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20963826 is an abundant number, since it is smaller than the sum of its proper divisors (29207694).

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

20963826 is a wasteful number, since it uses less digits than its factorization.

20963826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29887 (or 29881 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 20963826 is about 4578.6270868023. The cubic root of 20963826 is about 275.7339117920.

The spelling of 20963826 in words is "twenty million, nine hundred sixty-three thousand, eight hundred twenty-six".