2791723920 has 80 divisors (see below), whose sum is σ = 8674385280. Its totient is φ = 742735872.

The previous prime is 2791723871. The next prime is 2791723933. The reversal of 2791723920 is 293271972.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92112 + ... + 118608.

It is an arithmetic number, because the mean of its divisors is an integer number (108429816).

Almost surely, 2^2791723920 is an apocalyptic number.

2791723920 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 2791723920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4337192640).

2791723920 is an abundant number, since it is smaller than the sum of its proper divisors (5882661360).

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

2791723920 is a wasteful number, since it uses less digits than its factorization.

2791723920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26952 (or 26946 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 2791723920 is about 52836.7667443798. The cubic root of 2791723920 is about 1408.0697091219.

The spelling of 2791723920 in words is "two billion, seven hundred ninety-one million, seven hundred twenty-three thousand, nine hundred twenty".