2891375240 has 128 divisors (see below), whose sum is σ = 7227964800. Its totient is φ = 1034311680.

The previous prime is 2891375219. The next prime is 2891375243. The reversal of 2891375240 is 425731982.

It is not an unprimeable number, because it can be changed into a prime (2891375243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2238995 + ... + 2240285.

It is an arithmetic number, because the mean of its divisors is an integer number (56468475).

Almost surely, 2^2891375240 is an apocalyptic number.

2891375240 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 2891375240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3613982400).

2891375240 is an abundant number, since it is smaller than the sum of its proper divisors (4336589560).

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

2891375240 is a wasteful number, since it uses less digits than its factorization.

2891375240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447 (or 1443 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 2891375240 is about 53771.5095566416. The cubic root of 2891375240 is about 1424.6280330054.

The spelling of 2891375240 in words is "two billion, eight hundred ninety-one million, three hundred seventy-five thousand, two hundred forty".