20201064 has 32 divisors (see below), whose sum is σ = 54388320. Its totient is φ = 6215616.

The previous prime is 20201063. The next prime is 20201089. The reversal of 20201064 is 46010202.

It is not an unprimeable number, because it can be changed into a prime (20201063) 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, 32062 + ... + 32685.

It is an arithmetic number, because the mean of its divisors is an integer number (1699635).

Almost surely, 2^20201064 is an apocalyptic number.

20201064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20201064 is an abundant number, since it is smaller than the sum of its proper divisors (34187256).

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

20201064 is a wasteful number, since it uses less digits than its factorization.

20201064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64769 (or 64765 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20201064 is about 4494.5593777366. The cubic root of 20201064 is about 272.3483498148.

Adding to 20201064 its reverse (46010202), we get a palindrome (66211266).

The spelling of 20201064 in words is "twenty million, two hundred one thousand, sixty-four".