20955266 has 16 divisors (see below), whose sum is σ = 32136480. Its totient is φ = 10245120.

The previous prime is 20955251. The next prime is 20955293. The reversal of 20955266 is 66255902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29981 + ... + 30671.

It is an arithmetic number, because the mean of its divisors is an integer number (2008530).

Almost surely, 2^20955266 is an apocalyptic number.

20955266 is a deficient number, since it is larger than the sum of its proper divisors (11181214).

20955266 is a wasteful number, since it uses less digits than its factorization.

20955266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 20955266 is about 4577.6922133320. The cubic root of 20955266 is about 275.6963772375.

The spelling of 20955266 in words is "twenty million, nine hundred fifty-five thousand, two hundred sixty-six".