2778887604 has 12 divisors (see below), whose sum is σ = 6484071104. Its totient is φ = 926295864.

The previous prime is 2778887603. The next prime is 2778887621. The reversal of 2778887604 is 4067888772.

2778887604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778887603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115786972 + ... + 115786995.

Almost surely, 2^2778887604 is an apocalyptic number.

It is an amenable number.

2778887604 is an abundant number, since it is smaller than the sum of its proper divisors (3705183500).

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

2778887604 is a wasteful number, since it uses less digits than its factorization.

2778887604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231573974 (or 231573972 counting only the distinct ones).

The product of its (nonzero) digits is 8429568, while the sum is 57.

The square root of 2778887604 is about 52715.1553540346. The cubic root of 2778887604 is about 1405.9082966467.

The spelling of 2778887604 in words is "two billion, seven hundred seventy-eight million, eight hundred eighty-seven thousand, six hundred four".