2878432685 has 8 divisors (see below), whose sum is σ = 3534447840. Its totient is φ = 2249193744.

The previous prime is 2878432663. The next prime is 2878432717. The reversal of 2878432685 is 5862348782.

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

It is a cyclic number.

It is not a de Polignac number, because 2878432685 - 2²⁶ = 2811323821 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6693815 + ... + 6694244.

It is an arithmetic number, because the mean of its divisors is an integer number (441805980).

Almost surely, 2^2878432685 is an apocalyptic number.

It is an amenable number.

2878432685 is a deficient number, since it is larger than the sum of its proper divisors (656015155).

2878432685 is a wasteful number, since it uses less digits than its factorization.

2878432685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13388107.

The product of its digits is 5160960, while the sum is 53.

The square root of 2878432685 is about 53651.0268774047. The cubic root of 2878432685 is about 1422.4991836566.

The spelling of 2878432685 in words is "two billion, eight hundred seventy-eight million, four hundred thirty-two thousand, six hundred eighty-five".