2681384 has 8 divisors (see below), whose sum is σ = 5027610. Its totient is φ = 1340688.

The previous prime is 2681381. The next prime is 2681387. The reversal of 2681384 is 4831862.

It is an interprime number because it is at equal distance from previous prime (2681381) and next prime (2681387).

It can be written as a sum of positive squares in only one way, i.e., 1493284 + 1188100 = 1222^2 + 1090^2 .

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

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2681384.

It is not an unprimeable number, because it can be changed into a prime (2681381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167579 + ... + 167594.

2^2681384 is an apocalyptic number.

It is an amenable number.

2681384 is a deficient number, since it is larger than the sum of its proper divisors (2346226).

2681384 is a wasteful number, since it uses less digits than its factorization.

2681384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335179 (or 335175 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 2681384 is about 1637.4932060928. The cubic root of 2681384 is about 138.9268977100.

The spelling of 2681384 in words is "two million, six hundred eighty-one thousand, three hundred eighty-four".