2064138720 has 576 divisors, whose sum is σ = 8273664000. Its totient is φ = 429649920.

The previous prime is 2064138697. The next prime is 2064138733. The reversal of 2064138720 is 278314602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13853206 + ... + 13853354.

It is an arithmetic number, because the mean of its divisors is an integer number (14364000).

Almost surely, 2^2064138720 is an apocalyptic number.

2064138720 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 2064138720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4136832000).

2064138720 is an abundant number, since it is smaller than the sum of its proper divisors (6209525280).

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

2064138720 is a wasteful number, since it uses less digits than its factorization.

2064138720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 2064138720 is about 45432.7934426225. The cubic root of 2064138720 is about 1273.2478755058.

The spelling of 2064138720 in words is "two billion, sixty-four million, one hundred thirty-eight thousand, seven hundred twenty".