20000964 has 24 divisors (see below), whose sum is σ = 46762240. Its totient is φ = 6653664.

The previous prime is 20000951. The next prime is 20000969. The reversal of 20000964 is 46900002.

It is a super-4 number, since 4×20000964⁴ (a number of 30 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20000964.

It is not an unprimeable number, because it can be changed into a prime (20000969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5997 + ... + 8715.

Almost surely, 2^20000964 is an apocalyptic number.

It is an amenable number.

20000964 is an abundant number, since it is smaller than the sum of its proper divisors (26761276).

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

20000964 is a wasteful number, since it uses less digits than its factorization.

20000964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3339 (or 3337 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20000964 is about 4472.2437321774. The cubic root of 20000964 is about 271.4461227537.

Adding to 20000964 its reverse (46900002), we get a palindrome (66900966).

The spelling of 20000964 in words is "twenty million, nine hundred sixty-four", and thus it is an aban number.