2779788 has 24 divisors (see below), whose sum is σ = 7076160. Its totient is φ = 842320.

The previous prime is 2779787. The next prime is 2779793. The reversal of 2779788 is 8879772.

It is not an unprimeable number, because it can be changed into a prime (2779781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10398 + ... + 10661.

It is an arithmetic number, because the mean of its divisors is an integer number (294840).

2^2779788 is an apocalyptic number.

It is an amenable number.

2779788 is an abundant number, since it is smaller than the sum of its proper divisors (4296372).

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

2779788 is a wasteful number, since it uses less digits than its factorization.

2779788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21077 (or 21075 counting only the distinct ones).

The product of its digits is 395136, while the sum is 48.

The square root of 2779788 is about 1667.2696242660. The cubic root of 2779788 is about 140.6060124487.

The spelling of 2779788 in words is "two million, seven hundred seventy-nine thousand, seven hundred eighty-eight".