2678478336 has 120 divisors (see below), whose sum is σ = 8137392120. Its totient is φ = 845807616.

The previous prime is 2678478323. The next prime is 2678478349. The reversal of 2678478336 is 6338748762.

2678478336 is a `hidden beast` number, since 267 + 8 + 47 + 8 + 336 = 666.

It is an interprime number because it is at equal distance from previous prime (2678478323) and next prime (2678478349).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72256 + ... + 102848.

It is an arithmetic number, because the mean of its divisors is an integer number (67811601).

Almost surely, 2^2678478336 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 2678478336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4068696060).

2678478336 is an abundant number, since it is smaller than the sum of its proper divisors (5458913784).

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

2678478336 is a wasteful number, since it uses less digits than its factorization.

2678478336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30636 (or 30617 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 54.

The square root of 2678478336 is about 51754.0175831790. The cubic root of 2678478336 is about 1388.7669716851.

The spelling of 2678478336 in words is "two billion, six hundred seventy-eight million, four hundred seventy-eight thousand, three hundred thirty-six".