2878257085 has 32 divisors (see below), whose sum is σ = 3975995520. Its totient is φ = 1978214400.

The previous prime is 2878257037. The next prime is 2878257089. The reversal of 2878257085 is 5807528782.

It is not a de Polignac number, because 2878257085 - 2⁷ = 2878256957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2878257089) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 449305 + ... + 455665.

It is an arithmetic number, because the mean of its divisors is an integer number (124249860).

Almost surely, 2^2878257085 is an apocalyptic number.

It is an amenable number.

2878257085 is a deficient number, since it is larger than the sum of its proper divisors (1097738435).

2878257085 is a wasteful number, since it uses less digits than its factorization.

2878257085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6829.

The product of its (nonzero) digits is 2508800, while the sum is 52.

The square root of 2878257085 is about 53649.3903506834. The cubic root of 2878257085 is about 1422.4702563475.

The spelling of 2878257085 in words is "two billion, eight hundred seventy-eight million, two hundred fifty-seven thousand, eighty-five".