2878634 has 16 divisors (see below), whose sum is σ = 4916160. Its totient is φ = 1251360.

The previous prime is 2878613. The next prime is 2878639. The reversal of 2878634 is 4368782.

It is a d-powerful number, because it can be written as 2¹⁵ + 8 + 7⁶ + 8 + 6⁸ + 3² + 4¹⁰ .

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (2878639) 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, 2339 + ... + 3350.

It is an arithmetic number, because the mean of its divisors is an integer number (307260).

2^2878634 is an apocalyptic number.

2878634 is a deficient number, since it is larger than the sum of its proper divisors (2037526).

2878634 is a wasteful number, since it uses less digits than its factorization.

2878634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5725.

The product of its digits is 64512, while the sum is 38.

The square root of 2878634 is about 1696.6537655043. The cubic root of 2878634 is about 142.2532345656.

The spelling of 2878634 in words is "two million, eight hundred seventy-eight thousand, six hundred thirty-four".