2639952 has 120 divisors (see below), whose sum is σ = 8846656. Its totient is φ = 746496.

The previous prime is 2639941. The next prime is 2639953. The reversal of 2639952 is 2599362.

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 2¹³ + 6 + 3³ + 9 + 9⁶ + 5⁵ + 2²¹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2639953) 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, 27168 + ... + 27264.

2^2639952 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 2639952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4423328).

2639952 is an abundant number, since it is smaller than the sum of its proper divisors (6206704).

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

2639952 is an equidigital number, since it uses as much as digits as its factorization.

2639952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 109 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 2639952 is about 1624.7929098811. The cubic root of 2639952 is about 138.2076269681.

The spelling of 2639952 in words is "two million, six hundred thirty-nine thousand, nine hundred fifty-two".