2878886656 has 18 divisors (see below), whose sum is σ = 5746528172. Its totient is φ = 1439443200.

The previous prime is 2878886617. The next prime is 2878886657. The reversal of 2878886656 is 6566888782.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is not an unprimeable number, because it can be changed into a prime (2878886657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5622570 + ... + 5623081.

Almost surely, 2^2878886656 is an apocalyptic number.

It is an amenable number.

2878886656 is a deficient number, since it is larger than the sum of its proper divisors (2867641516).

2878886656 is an equidigital number, since it uses as much as digits as its factorization.

2878886656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11245667 (or 11245653 counting only the distinct ones).

The product of its digits is 61931520, while the sum is 64.

The square root of 2878886656 is about 53655.2574870348. The cubic root of 2878886656 is about 1422.5739627119.

The spelling of 2878886656 in words is "two billion, eight hundred seventy-eight million, eight hundred eighty-six thousand, six hundred fifty-six".