2756787990 has 64 divisors (see below), whose sum is σ = 7235281152. Its totient is φ = 666691200.

The previous prime is 2756787959. The next prime is 2756788009. The reversal of 2756787990 is 997876572.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129009 + ... + 148851.

It is an arithmetic number, because the mean of its divisors is an integer number (113051268).

Almost surely, 2^2756787990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2756787990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3617640576).

2756787990 is an abundant number, since it is smaller than the sum of its proper divisors (4478493162).

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

2756787990 is a wasteful number, since it uses less digits than its factorization.

2756787990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20285.

The product of its (nonzero) digits is 13335840, while the sum is 60.

The square root of 2756787990 is about 52505.1234642868. The cubic root of 2756787990 is about 1402.1714584672.

The spelling of 2756787990 in words is "two billion, seven hundred fifty-six million, seven hundred eighty-seven thousand, nine hundred ninety".