20908276 has 12 divisors (see below), whose sum is σ = 36836100. Its totient is φ = 10383680.

The previous prime is 20908273. The next prime is 20908297. The reversal of 20908276 is 67280902.

It can be written as a sum of positive squares in 2 ways, for example, as 10176100 + 10732176 = 3190^2 + 3276^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20908273) by changing a digit.

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, 16945 + ... + 18136.

It is an arithmetic number, because the mean of its divisors is an integer number (3069675).

Almost surely, 2^20908276 is an apocalyptic number.

It is an amenable number.

20908276 is a deficient number, since it is larger than the sum of its proper divisors (15927824).

20908276 is a wasteful number, since it uses less digits than its factorization.

20908276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35234 (or 35232 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 20908276 is about 4572.5568339825. The cubic root of 20908276 is about 275.4901495485.

The spelling of 20908276 in words is "twenty million, nine hundred eight thousand, two hundred seventy-six".