20356068 has 72 divisors (see below), whose sum is σ = 51889152. Its totient is φ = 6205248.

The previous prime is 20356051. The next prime is 20356069. The reversal of 20356068 is 86065302.

It is not an unprimeable number, because it can be changed into a prime (20356069) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 160221 + ... + 160347.

Almost surely, 2^20356068 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 20356068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25944576).

20356068 is an abundant number, since it is smaller than the sum of its proper divisors (31533084).

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

20356068 is a wasteful number, since it uses less digits than its factorization.

20356068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 20356068 is about 4511.7699409434. The cubic root of 20356068 is about 273.0431575828.

The spelling of 20356068 in words is "twenty million, three hundred fifty-six thousand, sixty-eight".