2887236 has 72 divisors (see below), whose sum is σ = 8334144. Its totient is φ = 834240.

The previous prime is 2887217. The next prime is 2887237. The reversal of 2887236 is 6327882.

It is a happy number.

It is a super-2 number, since 2×2887236² = 16672263439392, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2887236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2887237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8950 + ... + 9266.

It is an arithmetic number, because the mean of its divisors is an integer number (115752).

2^2887236 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 2887236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4167072).

2887236 is an abundant number, since it is smaller than the sum of its proper divisors (5446908).

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

2887236 is a wasteful number, since it uses less digits than its factorization.

2887236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 356 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 2887236 is about 1699.1868643560. The cubic root of 2887236 is about 142.3947884513.

The spelling of 2887236 in words is "two million, eight hundred eighty-seven thousand, two hundred thirty-six".