2778792 has 16 divisors (see below), whose sum is σ = 6947040. Its totient is φ = 926256.

The previous prime is 2778779. The next prime is 2778793. The reversal of 2778792 is 2978772.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2778793) 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, 57868 + ... + 57915.

It is an arithmetic number, because the mean of its divisors is an integer number (434190).

2^2778792 is an apocalyptic number.

It is an amenable number.

2778792 is an abundant number, since it is smaller than the sum of its proper divisors (4168248).

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

2778792 is a wasteful number, since it uses less digits than its factorization.

2778792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115792 (or 115788 counting only the distinct ones).

The product of its digits is 98784, while the sum is 42.

The square root of 2778792 is about 1666.9709055649. The cubic root of 2778792 is about 140.5892173649.

It can be divided in two parts, 2778 and 792, that added together give a triangular number (3570 = T₈₄).

The spelling of 2778792 in words is "two million, seven hundred seventy-eight thousand, seven hundred ninety-two".