2636244 has 72 divisors (see below), whose sum is σ = 7399392. Its totient is φ = 786240.

The previous prime is 2636243. The next prime is 2636251. The reversal of 2636244 is 4426362.

2636244 is a `hidden beast` number, since 2 + 636 + 24 + 4 = 666.

It is a nude number because it is divisible by every one of its digits.

Its product of digits (6912) is a multiple of the sum of its prime divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2636243) 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, 20059 + ... + 20189.

2^2636244 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 2636244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3699696).

2636244 is an abundant number, since it is smaller than the sum of its proper divisors (4763148).

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

2636244 is a wasteful number, since it uses less digits than its factorization.

2636244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 192 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 2636244 is about 1623.6514404268. The cubic root of 2636244 is about 138.1428891744.

The spelling of 2636244 in words is "two million, six hundred thirty-six thousand, two hundred forty-four".