20268612 has 144 divisors (see below), whose sum is σ = 66044160. Its totient is φ = 5094144.

The previous prime is 20268601. The next prime is 20268613. The reversal of 20268612 is 21686202.

20268612 is a `hidden beast` number, since 20 + 26 + 8 + 612 = 666.

It is not an unprimeable number, because it can be changed into a prime (20268613) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75214 + ... + 75482.

It is an arithmetic number, because the mean of its divisors is an integer number (458640).

Almost surely, 2^20268612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20268612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33022080).

20268612 is an abundant number, since it is smaller than the sum of its proper divisors (45775548).

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

20268612 is a wasteful number, since it uses less digits than its factorization.

20268612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 20268612 is about 4502.0675250378. The cubic root of 20268612 is about 272.6515701402.

The spelling of 20268612 in words is "twenty million, two hundred sixty-eight thousand, six hundred twelve".