2705172440 has 16 divisors (see below), whose sum is σ = 6086638080. Its totient is φ = 1082068960.

The previous prime is 2705172391. The next prime is 2705172451. The reversal of 2705172440 is 442715072.

It is a junction number, because it is equal to n+sod(n) for n = 2705172397 and 2705172406.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 33814616 + ... + 33814695.

It is an arithmetic number, because the mean of its divisors is an integer number (380414880).

Almost surely, 2^2705172440 is an apocalyptic number.

2705172440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2705172440 is an abundant number, since it is smaller than the sum of its proper divisors (3381465640).

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

2705172440 is a wasteful number, since it uses less digits than its factorization.

2705172440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67629322 (or 67629318 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 2705172440 is about 52011.2722397751. The cubic root of 2705172440 is about 1393.3652806382.

The spelling of 2705172440 in words is "two billion, seven hundred five million, one hundred seventy-two thousand, four hundred forty".