20140064 has 48 divisors (see below), whose sum is σ = 46303488. Its totient is φ = 8443392.

The previous prime is 20140031. The next prime is 20140067. The reversal of 20140064 is 46004102.

It is not an unprimeable number, because it can be changed into a prime (20140067) 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, 9572 + ... + 11484.

It is an arithmetic number, because the mean of its divisors is an integer number (964656).

Almost surely, 2^20140064 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 20140064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23151744).

20140064 is an abundant number, since it is smaller than the sum of its proper divisors (26163424).

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

20140064 is a wasteful number, since it uses less digits than its factorization.

20140064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1977 (or 1969 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 20140064 is about 4487.7682649620. The cubic root of 20140064 is about 272.0739418352.

Adding to 20140064 its reverse (46004102), we get a palindrome (66144166).

The spelling of 20140064 in words is "twenty million, one hundred forty thousand, sixty-four".