20568236 has 12 divisors (see below), whose sum is σ = 38763312. Its totient is φ = 9493008.

The previous prime is 20568227. The next prime is 20568253. The reversal of 20568236 is 63286502.

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 3 ways as a sum of consecutive naturals, for example, 197720 + ... + 197823.

It is an arithmetic number, because the mean of its divisors is an integer number (3230276).

Almost surely, 2^20568236 is an apocalyptic number.

20568236 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20568236 is a deficient number, since it is larger than the sum of its proper divisors (18195076).

20568236 is a wasteful number, since it uses less digits than its factorization.

20568236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395560 (or 395558 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 20568236 is about 4535.2217145361. The cubic root of 20568236 is about 273.9885089397.

The spelling of 20568236 in words is "twenty million, five hundred sixty-eight thousand, two hundred thirty-six".