2878128 has 120 divisors (see below), whose sum is σ = 9285120. Its totient is φ = 823680.

The previous prime is 2878123. The next prime is 2878147. The reversal of 2878128 is 8218782.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2878092 and 2878101.

It is not an unprimeable number, because it can be changed into a prime (2878123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36393 + ... + 36471.

It is an arithmetic number, because the mean of its divisors is an integer number (77376).

2^2878128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2878128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4642560).

2878128 is an abundant number, since it is smaller than the sum of its proper divisors (6406992).

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

2878128 is a wasteful number, since it uses less digits than its factorization.

2878128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 118 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

The square root of 2878128 is about 1696.5046419035. The cubic root of 2878128 is about 142.2448990895.

The spelling of 2878128 in words is "two million, eight hundred seventy-eight thousand, one hundred twenty-eight".