2878860 has 24 divisors (see below), whose sum is σ = 8060976. Its totient is φ = 767680.

The previous prime is 2878853. The next prime is 2878867. The reversal of 2878860 is 688782.

It is an interprime number because it is at equal distance from previous prime (2878853) and next prime (2878867).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2878867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23931 + ... + 24050.

It is an arithmetic number, because the mean of its divisors is an integer number (335874).

2^2878860 is an apocalyptic number.

2878860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2878860 is an abundant number, since it is smaller than the sum of its proper divisors (5182116).

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

2878860 is a wasteful number, since it uses less digits than its factorization.

2878860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47993 (or 47991 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 2878860 is about 1696.7203658824. The cubic root of 2878860 is about 142.2569572097.

The spelling of 2878860 in words is "two million, eight hundred seventy-eight thousand, eight hundred sixty".