20950256 has 20 divisors (see below), whose sum is σ = 42979392. Its totient is φ = 9858816.

The previous prime is 20950249. The next prime is 20950271. The reversal of 20950256 is 65205902.

It is a super-3 number, since 3×20950256³ (a number of 23 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (29) 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, 38240 + ... + 38783.

Almost surely, 2^20950256 is an apocalyptic number.

It is an amenable number.

20950256 is an abundant number, since it is smaller than the sum of its proper divisors (22029136).

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

20950256 is a wasteful number, since it uses less digits than its factorization.

20950256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77048 (or 77042 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 20950256 is about 4577.1449616546. The cubic root of 20950256 is about 275.6744042572.

The spelling of 20950256 in words is "twenty million, nine hundred fifty thousand, two hundred fifty-six".