20829912 has 16 divisors (see below), whose sum is σ = 52074840. Its totient is φ = 6943296.

The previous prime is 20829899. The next prime is 20829943. The reversal of 20829912 is 21992802.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433933 + ... + 433980.

Almost surely, 2^20829912 is an apocalyptic number.

It is an amenable number.

20829912 is an abundant number, since it is smaller than the sum of its proper divisors (31244928).

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

20829912 is a wasteful number, since it uses less digits than its factorization.

20829912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867922 (or 867918 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 20829912 is about 4563.9798421991. The cubic root of 20829912 is about 275.1455405916.

The spelling of 20829912 in words is "twenty million, eight hundred twenty-nine thousand, nine hundred twelve".