2878138 has 8 divisors (see below), whose sum is σ = 4390560. Its totient is φ = 1414620.

The previous prime is 2878123. The next prime is 2878147. The reversal of 2878138 is 8318782.

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

It is a junction number, because it is equal to n+sod(n) for n = 2878097 and 2878106.

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, 12078 + ... + 12313.

It is an arithmetic number, because the mean of its divisors is an integer number (548820).

2^2878138 is an apocalyptic number.

2878138 is a deficient number, since it is larger than the sum of its proper divisors (1512422).

2878138 is a wasteful number, since it uses less digits than its factorization.

2878138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24452.

The product of its digits is 21504, while the sum is 37.

The square root of 2878138 is about 1696.5075891372. The cubic root of 2878138 is about 142.2450638317.

The spelling of 2878138 in words is "two million, eight hundred seventy-eight thousand, one hundred thirty-eight".