2878965 has 12 divisors (see below), whose sum is σ = 4990284. Its totient is φ = 1535424.

The previous prime is 2878961. The next prime is 2878973. The reversal of 2878965 is 5698782.

2878965 is nontrivially palindromic in base 2.

It can be written as a sum of positive squares in 2 ways, for example, as 1306449 + 1572516 = 1143^2 + 1254^2 .

It is not a de Polignac number, because 2878965 - 2² = 2878961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 63977 = 2878965 / (2 + 8 + 7 + 8 + 9 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 2878965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2878961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31944 + ... + 32033.

It is an arithmetic number, because the mean of its divisors is an integer number (415857).

2^2878965 is an apocalyptic number.

It is an amenable number.

2878965 is a deficient number, since it is larger than the sum of its proper divisors (2111319).

2878965 is a wasteful number, since it uses less digits than its factorization.

2878965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63988 (or 63985 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 2878965 is about 1696.7513076465. The cubic root of 2878965 is about 142.2586866904.

The spelling of 2878965 in words is "two million, eight hundred seventy-eight thousand, nine hundred sixty-five".