2809094240 has 48 divisors (see below), whose sum is σ = 6678815472. Its totient is φ = 1116470784.

The previous prime is 2809094237. The next prime is 2809094243. The reversal of 2809094240 is 424909082.

It is an interprime number because it is at equal distance from previous prime (2809094237) and next prime (2809094243).

It is a junction number, because it is equal to n+sod(n) for n = 2809094194 and 2809094203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2809094243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30794 + ... + 81033.

It is an arithmetic number, because the mean of its divisors is an integer number (139141989).

Almost surely, 2^2809094240 is an apocalyptic number.

2809094240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2809094240 is an abundant number, since it is smaller than the sum of its proper divisors (3869721232).

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

2809094240 is a wasteful number, since it uses less digits than its factorization.

2809094240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111999 (or 111991 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 2809094240 is about 53000.8890491471. The cubic root of 2809094240 is about 1410.9840455619.

The spelling of 2809094240 in words is "two billion, eight hundred nine million, ninety-four thousand, two hundred forty".