2871378 has 12 divisors (see below), whose sum is σ = 6221358. Its totient is φ = 957120.

The previous prime is 2871367. The next prime is 2871391. The reversal of 2871378 is 8731782.

2871378 is a `hidden beast` number, since 287 + 1 + 378 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2812329 + 59049 = 1677^2 + 243^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79743 + ... + 79778.

2^2871378 is an apocalyptic number.

2871378 is an abundant number, since it is smaller than the sum of its proper divisors (3349980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2871378 is a wasteful number, since it uses less digits than its factorization.

2871378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159529 (or 159526 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 2871378 is about 1694.5140896434. The cubic root of 2871378 is about 142.1336109355.

It can be divided in two parts, 2871 and 378, that added together give a square (3249 = 57²).

The spelling of 2871378 in words is "two million, eight hundred seventy-one thousand, three hundred seventy-eight".