2686438 has 4 divisors (see below), whose sum is σ = 4029660. Its totient is φ = 1343218.

The previous prime is 2686393. The next prime is 2686451. The reversal of 2686438 is 8346862.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2686397 and 2686406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671608 + ... + 671611.

It is an arithmetic number, because the mean of its divisors is an integer number (1007415).

2^2686438 is an apocalyptic number.

2686438 is a deficient number, since it is larger than the sum of its proper divisors (1343222).

2686438 is a wasteful number, since it uses less digits than its factorization.

2686438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343221.

The product of its digits is 55296, while the sum is 37.

The square root of 2686438 is about 1639.0356921068. The cubic root of 2686438 is about 139.0141282674.

The spelling of 2686438 in words is "two million, six hundred eighty-six thousand, four hundred thirty-eight".