2688039 has 16 divisors (see below), whose sum is σ = 4120800. Its totient is φ = 1729728.

The previous prime is 2688019. The next prime is 2688053. The reversal of 2688039 is 9308862.

It is not a de Polignac number, because 2688039 - 2¹³ = 2679847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2687994 and 2688012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 934 + ... + 2499.

It is an arithmetic number, because the mean of its divisors is an integer number (257550).

2^2688039 is an apocalyptic number.

2688039 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2688039 is a deficient number, since it is larger than the sum of its proper divisors (1432761).

2688039 is a wasteful number, since it uses less digits than its factorization.

2688039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3471 (or 3465 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 2688039 is about 1639.5240162925. The cubic root of 2688039 is about 139.0417382378.

The spelling of 2688039 in words is "two million, six hundred eighty-eight thousand, thirty-nine".