2686278540 has 48 divisors (see below), whose sum is σ = 8205361920. Its totient is φ = 651218880.

The previous prime is 2686278527. The next prime is 2686278559. The reversal of 2686278540 is 458726862.

It is a self number, because there is not a number n which added to its sum of digits gives 2686278540.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2034400 + ... + 2035719.

It is an arithmetic number, because the mean of its divisors is an integer number (170945040).

Almost surely, 2^2686278540 is an apocalyptic number.

2686278540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2686278540 is an abundant number, since it is smaller than the sum of its proper divisors (5519083380).

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

2686278540 is a wasteful number, since it uses less digits than its factorization.

2686278540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070142 (or 4070140 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The square root of 2686278540 is about 51829.3212380791. The cubic root of 2686278540 is about 1390.1137770676.

The spelling of 2686278540 in words is "two billion, six hundred eighty-six million, two hundred seventy-eight thousand, five hundred forty".