2107878 has 16 divisors (see below), whose sum is σ = 4270080. Its totient is φ = 693576.

The previous prime is 2107877. The next prime is 2107883. The reversal of 2107878 is 8787012.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2107873) 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, 1750 + ... + 2697.

It is an arithmetic number, because the mean of its divisors is an integer number (266880).

2^2107878 is an apocalyptic number.

2107878 is an abundant number, since it is smaller than the sum of its proper divisors (2162202).

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

2107878 is a wasteful number, since it uses less digits than its factorization.

2107878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4531.

The product of its (nonzero) digits is 6272, while the sum is 33.

The square root of 2107878 is about 1451.8532983742. The cubic root of 2107878 is about 128.2178500477.

It can be divided in two parts, 2 and 107878, that added together give a triangular number (107880 = T₄₆₄).

The spelling of 2107878 in words is "two million, one hundred seven thousand, eight hundred seventy-eight".