2047688 has 8 divisors (see below), whose sum is σ = 3839430. Its totient is φ = 1023840.

The previous prime is 2047651. The next prime is 2047699. The reversal of 2047688 is 8867402.

It can be written as a sum of positive squares in only one way, i.e., 1582564 + 465124 = 1258^2 + 682^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2047688² = 8386052290688, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127973 + ... + 127988.

2^2047688 is an apocalyptic number.

It is an amenable number.

2047688 is a deficient number, since it is larger than the sum of its proper divisors (1791742).

2047688 is a wasteful number, since it uses less digits than its factorization.

2047688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255967 (or 255963 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 2047688 is about 1430.9744931340. The cubic root of 2047688 is about 126.9856350132.

The spelling of 2047688 in words is "two million, forty-seven thousand, six hundred eighty-eight".