20966049 has 48 divisors (see below), whose sum is σ = 35223552. Its totient is φ = 11902464.

The previous prime is 20966027. The next prime is 20966053. The reversal of 20966049 is 94066902.

It is not a de Polignac number, because 20966049 - 2⁵ = 20966017 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20966749) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 165024 + ... + 165150.

It is an arithmetic number, because the mean of its divisors is an integer number (733824).

Almost surely, 2^20966049 is an apocalyptic number.

It is an amenable number.

20966049 is a deficient number, since it is larger than the sum of its proper divisors (14257503).

20966049 is a wasteful number, since it uses less digits than its factorization.

20966049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 20966049 is about 4578.8698387266. The cubic root of 20966049 is about 275.7436577042.

The spelling of 20966049 in words is "twenty million, nine hundred sixty-six thousand, forty-nine".