2639452056 has 24 divisors (see below), whose sum is σ = 6599259420. Its totient is φ = 879733456.

The previous prime is 2639452043. The next prime is 2639452061. The reversal of 2639452056 is 6502549362.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 2639451999 and 2639452017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 246445 + ... + 256931.

Almost surely, 2^2639452056 is an apocalyptic number.

It is an amenable number.

2639452056 is an abundant number, since it is smaller than the sum of its proper divisors (3959807364).

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

2639452056 is an frugal number, since it uses more digits than its factorization.

2639452056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20983 (or 10492 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 42.

The square root of 2639452056 is about 51375.5978651344. The cubic root of 2639452056 is about 1381.9890200692.

The spelling of 2639452056 in words is "two billion, six hundred thirty-nine million, four hundred fifty-two thousand, fifty-six".