2688394 has 8 divisors (see below), whose sum is σ = 4101120. Its totient is φ = 1321356.

The previous prime is 2688391. The next prime is 2688419. The reversal of 2688394 is 4938862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 2²¹ + 6³ + 8 + 8³ + 3¹² + 9⁵ + 4² .

It is not an unprimeable number, because it can be changed into a prime (2688391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11274 + ... + 11509.

It is an arithmetic number, because the mean of its divisors is an integer number (512640).

2^2688394 is an apocalyptic number.

2688394 is a deficient number, since it is larger than the sum of its proper divisors (1412726).

2688394 is a wasteful number, since it uses less digits than its factorization.

2688394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22844.

The product of its digits is 82944, while the sum is 40.

The square root of 2688394 is about 1639.6322758472. The cubic root of 2688394 is about 139.0478588887.

The spelling of 2688394 in words is "two million, six hundred eighty-eight thousand, three hundred ninety-four".