2778038 has 8 divisors (see below), whose sum is σ = 4412232. Its totient is φ = 1307296.

The previous prime is 2778023. The next prime is 2778049. The reversal of 2778038 is 8308772.

It is a happy number.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2777989 and 2778007.

It is a congruent number.

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, 40820 + ... + 40887.

It is an arithmetic number, because the mean of its divisors is an integer number (551529).

2^2778038 is an apocalyptic number.

2778038 is a deficient number, since it is larger than the sum of its proper divisors (1634194).

2778038 is a wasteful number, since it uses less digits than its factorization.

2778038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81726.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 2778038 is about 1666.7447315051. The cubic root of 2778038 is about 140.5765003450.

The spelling of 2778038 in words is "two million, seven hundred seventy-eight thousand, thirty-eight".