20064880 has 60 divisors (see below), whose sum is σ = 51231096. Its totient is φ = 7248000.

The previous prime is 20064851. The next prime is 20064881. The reversal of 20064880 is 8846002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20064881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132805 + ... + 132955.

Almost surely, 2^20064880 is an apocalyptic number.

20064880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20064880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25615548).

20064880 is an abundant number, since it is smaller than the sum of its proper divisors (31166216).

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

20064880 is a wasteful number, since it uses less digits than its factorization.

20064880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 20064880 is about 4479.3838862058. The cubic root of 20064880 is about 271.7349638633.

It can be divided in two parts, 2006 and 4880, that added together give a palindrome (6886).

The spelling of 20064880 in words is "twenty million, sixty-four thousand, eight hundred eighty".