2787899440 has 60 divisors (see below), whose sum is σ = 6697888272. Its totient is φ = 1079157120.

The previous prime is 2787899363. The next prime is 2787899441. The reversal of 2787899440 is 449987872.

It is not an unprimeable number, because it can be changed into a prime (2787899441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58749 + ... + 95011.

Almost surely, 2^2787899440 is an apocalyptic number.

2787899440 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 2787899440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3348944136).

2787899440 is an abundant number, since it is smaller than the sum of its proper divisors (3909988832).

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

2787899440 is a wasteful number, since it uses less digits than its factorization.

2787899440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36338 (or 36301 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 58.

The square root of 2787899440 is about 52800.5628757876. The cubic root of 2787899440 is about 1407.4264273405.

The spelling of 2787899440 in words is "two billion, seven hundred eighty-seven million, eight hundred ninety-nine thousand, four hundred forty".