2787265800 has 576 divisors, whose sum is σ = 11142144000. Its totient is φ = 616896000.

The previous prime is 2787265763. The next prime is 2787265829. The reversal of 2787265800 is 85627872.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 11662081 + ... + 11662319.

It is an arithmetic number, because the mean of its divisors is an integer number (19344000).

Almost surely, 2^2787265800 is an apocalyptic number.

2787265800 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 2787265800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5571072000).

2787265800 is an abundant number, since it is smaller than the sum of its proper divisors (8354878200).

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

2787265800 is a wasteful number, since it uses less digits than its factorization.

2787265800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 2787265800 is about 52794.5622199863. The cubic root of 2787265800 is about 1407.3197915893.

The spelling of 2787265800 in words is "two billion, seven hundred eighty-seven million, two hundred sixty-five thousand, eight hundred".