20755256 has 16 divisors (see below), whose sum is σ = 39576600. Its totient is φ = 10201504.

The previous prime is 20755211. The next prime is 20755297. The reversal of 20755256 is 65255702.

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 3 ways as a sum of consecutive naturals, for example, 21515 + ... + 22458.

Almost surely, 2^20755256 is an apocalyptic number.

It is an amenable number.

20755256 is a deficient number, since it is larger than the sum of its proper divisors (18821344).

20755256 is a wasteful number, since it uses less digits than its factorization.

20755256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44038 (or 44034 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 20755256 is about 4555.7936739936. The cubic root of 20755256 is about 274.8164328650.

The spelling of 20755256 in words is "twenty million, seven hundred fifty-five thousand, two hundred fifty-six".