2891320 has 48 divisors (see below), whose sum is σ = 6823080. Its totient is φ = 1102080.

The previous prime is 2891303. The next prime is 2891323. The reversal of 2891320 is 231982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2891323) 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, 67219 + ... + 67261.

2^2891320 is an apocalyptic number.

2891320 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 2891320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3411540).

2891320 is an abundant number, since it is smaller than the sum of its proper divisors (3931760).

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

2891320 is a wasteful number, since it uses less digits than its factorization.

2891320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2891320 is about 1700.3881909729. The cubic root of 2891320 is about 142.4618960396.

The spelling of 2891320 in words is "two million, eight hundred ninety-one thousand, three hundred twenty".