20056949 has 8 divisors (see below), whose sum is σ = 22293792. Its totient is φ = 17889040.

The previous prime is 20056903. The next prime is 20056961. The reversal of 20056949 is 94965002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20056949 - 2⁸ = 20056693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20056979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16619 + ... + 17784.

It is an arithmetic number, because the mean of its divisors is an integer number (2786724).

Almost surely, 2^20056949 is an apocalyptic number.

It is an amenable number.

20056949 is a deficient number, since it is larger than the sum of its proper divisors (2236843).

20056949 is a wasteful number, since it uses less digits than its factorization.

20056949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34467.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 20056949 is about 4478.4985207098. The cubic root of 20056949 is about 271.6991564557.

The spelling of 20056949 in words is "twenty million, fifty-six thousand, nine hundred forty-nine".