2678739420 has 48 divisors (see below), whose sum is σ = 8571967488. Its totient is φ = 612283200.

The previous prime is 2678739407. The next prime is 2678739451. The reversal of 2678739420 is 249378762.

It is a self number, because there is not a number n which added to its sum of digits gives 2678739420.

It is a congruent number.

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, 3188556 + ... + 3189395.

It is an arithmetic number, because the mean of its divisors is an integer number (178582656).

Almost surely, 2^2678739420 is an apocalyptic number.

2678739420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2678739420 is an abundant number, since it is smaller than the sum of its proper divisors (5893228068).

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

2678739420 is a wasteful number, since it uses less digits than its factorization.

2678739420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6377970 (or 6377968 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 48.

The square root of 2678739420 is about 51756.5398766185. The cubic root of 2678739420 is about 1388.8120934558.

The spelling of 2678739420 in words is "two billion, six hundred seventy-eight million, seven hundred thirty-nine thousand, four hundred twenty".