20826912 has 24 divisors (see below), whose sum is σ = 54670896. Its totient is φ = 6942272.

The previous prime is 20826889. The next prime is 20826919. The reversal of 20826912 is 21962802.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20826912.

It is not an unprimeable number, because it can be changed into a prime (20826919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108378 + ... + 108569.

It is an arithmetic number, because the mean of its divisors is an integer number (2277954).

Almost surely, 2^20826912 is an apocalyptic number.

It is an amenable number.

20826912 is an abundant number, since it is smaller than the sum of its proper divisors (33843984).

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

20826912 is a wasteful number, since it uses less digits than its factorization.

20826912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216960 (or 216952 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 20826912 is about 4563.6511698420. The cubic root of 20826912 is about 275.1323308022.

The spelling of 20826912 in words is "twenty million, eight hundred twenty-six thousand, nine hundred twelve".