2810666340 has 36 divisors (see below), whose sum is σ = 8525688444. Its totient is φ = 749510976.

The previous prime is 2810666323. The next prime is 2810666347. The reversal of 2810666340 is 436660182.

It can be written as a sum of positive squares in 2 ways, for example, as 504361764 + 2306304576 = 22458^2 + 48024^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2810666295 and 2810666304.

It is not an unprimeable number, because it can be changed into a prime (2810666347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7807227 + ... + 7807586.

It is an arithmetic number, because the mean of its divisors is an integer number (236824679).

Almost surely, 2^2810666340 is an apocalyptic number.

2810666340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2810666340 is an abundant number, since it is smaller than the sum of its proper divisors (5715022104).

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

2810666340 is a wasteful number, since it uses less digits than its factorization.

2810666340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15614828 (or 15614823 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 2810666340 is about 53015.7178580089. The cubic root of 2810666340 is about 1411.2472139421.

The spelling of 2810666340 in words is "two billion, eight hundred ten million, six hundred sixty-six thousand, three hundred forty".