2872778616 has 64 divisors (see below), whose sum is σ = 7988695200. Its totient is φ = 956542464.

The previous prime is 2872778569. The next prime is 2872778633. The reversal of 2872778616 is 6168772782.

It is a happy number.

2872778616 is a `hidden beast` number, since 287 + 277 + 86 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204226 + ... + 217838.

Almost surely, 2^2872778616 is an apocalyptic number.

It is an amenable number.

2872778616 is an abundant number, since it is smaller than the sum of its proper divisors (5115916584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2872778616 is a wasteful number, since it uses less digits than its factorization.

2872778616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14605 (or 14595 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The square root of 2872778616 is about 53598.3079583675. The cubic root of 2872778616 is about 1421.5671740798.

It can be divided in two parts, 287 and 2778616, that added together give a triangular number (2778903 = T₂₃₅₇).

The spelling of 2872778616 in words is "two billion, eight hundred seventy-two million, seven hundred seventy-eight thousand, six hundred sixteen".