2487636 has 36 divisors (see below), whose sum is σ = 6438432. Its totient is φ = 809424.

The previous prime is 2487629. The next prime is 2487637. The reversal of 2487636 is 6367842.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a d-powerful number, because it can be written as 2²¹ + 4⁹ + 8³ + 7⁶ + 6³ + 3⁷ + 6⁵ .

It is a self number, because there is not a number n which added to its sum of digits gives 2487636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2487637) 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, 745 + ... + 2351.

2^2487636 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 2487636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3219216).

2487636 is an abundant number, since it is smaller than the sum of its proper divisors (3950796).

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

2487636 is a wasteful number, since it uses less digits than its factorization.

2487636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660 (or 1655 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 2487636 is about 1577.2241438680. The cubic root of 2487636 is about 135.4967705734.

The spelling of 2487636 in words is "two million, four hundred eighty-seven thousand, six hundred thirty-six".