2808669240 has 288 divisors, whose sum is σ = 10129129920. Its totient is φ = 670666752.

The previous prime is 2808669187. The next prime is 2808669277. The reversal of 2808669240 is 429668082.

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 polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 24855424 + ... + 24855536.

It is an arithmetic number, because the mean of its divisors is an integer number (35170590).

Almost surely, 2^2808669240 is an apocalyptic number.

2808669240 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 2808669240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5064564960).

2808669240 is an abundant number, since it is smaller than the sum of its proper divisors (7320460680).

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

2808669240 is a wasteful number, since it uses less digits than its factorization.

2808669240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 2808669240 is about 52996.8795307799. The cubic root of 2808669240 is about 1410.9128840163.

The spelling of 2808669240 in words is "two billion, eight hundred eight million, six hundred sixty-nine thousand, two hundred forty".