2861378 has 16 divisors (see below), whose sum is σ = 4656960. Its totient is φ = 1310736.

The previous prime is 2861377. The next prime is 2861387. The reversal of 2861378 is 8731682.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2861377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4013 + ... + 4671.

It is an arithmetic number, because the mean of its divisors is an integer number (291060).

2^2861378 is an apocalyptic number.

2861378 is a deficient number, since it is larger than the sum of its proper divisors (1795582).

2861378 is a wasteful number, since it uses less digits than its factorization.

2861378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841.

The product of its digits is 16128, while the sum is 35.

The square root of 2861378 is about 1691.5608177065. The cubic root of 2861378 is about 141.9684185536.

The spelling of 2861378 in words is "two million, eight hundred sixty-one thousand, three hundred seventy-eight".