2861632 has 28 divisors (see below), whose sum is σ = 5779516. Its totient is φ = 1405440.

The previous prime is 2861623. The next prime is 2861657. The reversal of 2861632 is 2361682.

It can be written as a sum of positive squares in 2 ways, for example, as 1478656 + 1382976 = 1216^2 + 1176^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2861632.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3538 + ... + 4270.

2^2861632 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 2861632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2889758).

2861632 is an abundant number, since it is smaller than the sum of its proper divisors (2917884).

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

2861632 is an equidigital number, since it uses as much as digits as its factorization.

2861632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806 (or 796 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 2861632 is about 1691.6358946298. The cubic root of 2861632 is about 141.9726192000.

The spelling of 2861632 in words is "two million, eight hundred sixty-one thousand, six hundred thirty-two".