2807138740 has 96 divisors (see below), whose sum is σ = 6825772800. Its totient is φ = 949877760.

The previous prime is 2807138729. The next prime is 2807138743. The reversal of 2807138740 is 478317082.

It is a junction number, because it is equal to n+sod(n) for n = 2807138693 and 2807138702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2807138743) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4933176 + ... + 4933744.

It is an arithmetic number, because the mean of its divisors is an integer number (71101800).

Almost surely, 2^2807138740 is an apocalyptic number.

2807138740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2807138740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3412886400).

2807138740 is an abundant number, since it is smaller than the sum of its proper divisors (4018634060).

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

2807138740 is a wasteful number, since it uses less digits than its factorization.

2807138740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985 (or 983 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 2807138740 is about 52982.4380337485. The cubic root of 2807138740 is about 1410.6565592426.

The spelling of 2807138740 in words is "two billion, eight hundred seven million, one hundred thirty-eight thousand, seven hundred forty".