20963412 has 18 divisors (see below), whose sum is σ = 52990938. Its totient is φ = 6987792.

The previous prime is 20963401. The next prime is 20963413. The reversal of 20963412 is 21436902.

20963412 is a `hidden beast` number, since 20 + 9 + 634 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20196036 + 767376 = 4494^2 + 876^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20963413) 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 5 ways as a sum of consecutive naturals, for example, 291123 + ... + 291194.

It is an arithmetic number, because the mean of its divisors is an integer number (2943941).

Almost surely, 2^20963412 is an apocalyptic number.

It is an amenable number.

20963412 is an abundant number, since it is smaller than the sum of its proper divisors (32027526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20963412 is a wasteful number, since it uses less digits than its factorization.

20963412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582327 (or 582322 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 20963412 is about 4578.5818765203. The cubic root of 20963412 is about 275.7320966878.

The spelling of 20963412 in words is "twenty million, nine hundred sixty-three thousand, four hundred twelve".