2878732655 has 16 divisors (see below), whose sum is σ = 3850195680. Its totient is φ = 2053435392.

The previous prime is 2878732651. The next prime is 2878732669. The reversal of 2878732655 is 5562378782.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2878732655 - 2² = 2878732651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2878732597 and 2878732606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2878732651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 889634 + ... + 892863.

It is an arithmetic number, because the mean of its divisors is an integer number (240637230).

Almost surely, 2^2878732655 is an apocalyptic number.

2878732655 is a deficient number, since it is larger than the sum of its proper divisors (971463025).

2878732655 is a wasteful number, since it uses less digits than its factorization.

2878732655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782538.

The product of its digits is 5644800, while the sum is 53.

The square root of 2878732655 is about 53653.8223708246. The cubic root of 2878732655 is about 1422.5485962253.

The spelling of 2878732655 in words is "two billion, eight hundred seventy-eight million, seven hundred thirty-two thousand, six hundred fifty-five".