2639754252 has 96 divisors (see below), whose sum is σ = 7276469760. Its totient is φ = 825739200.

The previous prime is 2639754181. The next prime is 2639754263. The reversal of 2639754252 is 2524579362.

2639754252 is a `hidden beast` number, since 2 + 6 + 397 + 5 + 4 + 252 = 666.

2639754252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2639754198 and 2639754207.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121627 + ... + 141677.

It is an arithmetic number, because the mean of its divisors is an integer number (75796560).

Almost surely, 2^2639754252 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 2639754252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3638234880).

2639754252 is an abundant number, since it is smaller than the sum of its proper divisors (4636715508).

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

2639754252 is a wasteful number, since it uses less digits than its factorization.

2639754252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20140 (or 20132 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The square root of 2639754252 is about 51378.5388270239. The cubic root of 2639754252 is about 1382.0417602602.

The spelling of 2639754252 in words is "two billion, six hundred thirty-nine million, seven hundred fifty-four thousand, two hundred fifty-two".