20966908 has 24 divisors (see below), whose sum is σ = 37855440. Its totient is φ = 10154880.

The previous prime is 20966903. The next prime is 20966921. The reversal of 20966908 is 80966902.

It is a happy number.

It is a super-2 number, since 2×20966908² = 879222462160928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20966903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28003 + ... + 28741.

It is an arithmetic number, because the mean of its divisors is an integer number (1577310).

Almost surely, 2^20966908 is an apocalyptic number.

It is an amenable number.

20966908 is a deficient number, since it is larger than the sum of its proper divisors (16888532).

20966908 is a wasteful number, since it uses less digits than its factorization.

20966908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957 (or 955 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 20966908 is about 4578.9636382046. The cubic root of 20966908 is about 275.7474234839.

The spelling of 20966908 in words is "twenty million, nine hundred sixty-six thousand, nine hundred eight".