2808644540 has 48 divisors (see below), whose sum is σ = 6628039488. Its totient is φ = 991947264.

The previous prime is 2808644521. The next prime is 2808644549. The reversal of 2808644540 is 454468082.

2808644540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2808644549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228857 + ... + 240816.

It is an arithmetic number, because the mean of its divisors is an integer number (138084156).

Almost surely, 2^2808644540 is an apocalyptic number.

2808644540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2808644540 is an abundant number, since it is smaller than the sum of its proper divisors (3819394948).

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

2808644540 is a wasteful number, since it uses less digits than its factorization.

2808644540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469718 (or 469716 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 41.

The square root of 2808644540 is about 52996.6464976795. The cubic root of 2808644540 is about 1410.9087480539.

The spelling of 2808644540 in words is "two billion, eight hundred eight million, six hundred forty-four thousand, five hundred forty".