2689378 has 8 divisors (see below), whose sum is σ = 4041180. Its totient is φ = 1342320.

The previous prime is 2689369. The next prime is 2689381. The reversal of 2689378 is 8739862.

It can be written as a sum of positive squares in 2 ways, for example, as 2582449 + 106929 = 1607^2 + 327^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1168 + ... + 2596.

2^2689378 is an apocalyptic number.

2689378 is a deficient number, since it is larger than the sum of its proper divisors (1351802).

2689378 is a wasteful number, since it uses less digits than its factorization.

2689378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2372.

The product of its digits is 145152, while the sum is 43.

The square root of 2689378 is about 1639.9323156765. The cubic root of 2689378 is about 139.0648214821.

The spelling of 2689378 in words is "two million, six hundred eighty-nine thousand, three hundred seventy-eight".