2891088 has 60 divisors (see below), whose sum is σ = 8574228. Its totient is φ = 906240.

The previous prime is 2891087. The next prime is 2891093. The reversal of 2891088 is 8801982.

It can be written as a sum of positive squares in 2 ways, for example, as 2471184 + 419904 = 1572^2 + 648^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2891081) 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, 1858 + ... + 3038.

2^2891088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2891088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4287114).

2891088 is an abundant number, since it is smaller than the sum of its proper divisors (5683140).

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

2891088 is a wasteful number, since it uses less digits than its factorization.

2891088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212 (or 1203 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 2891088 is about 1700.3199698880. The cubic root of 2891088 is about 142.4580855489.

2891088 divided by its sum of digits (36) gives a palindrome (80308).

It can be divided in two parts, 289 and 1088, that multiplied together give a cube (314432 = 68³).

The spelling of 2891088 in words is "two million, eight hundred ninety-one thousand, eighty-eight".