2778704 has 10 divisors (see below), whose sum is σ = 5383770. Its totient is φ = 1389344.

The previous prime is 2778697. The next prime is 2778739. The reversal of 2778704 is 4078772.

It can be written as a sum of positive squares in only one way, i.e., 2755600 + 23104 = 1660^2 + 152^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86819 + ... + 86850.

It is an arithmetic number, because the mean of its divisors is an integer number (538377).

2^2778704 is an apocalyptic number.

It is an amenable number.

2778704 is a deficient number, since it is larger than the sum of its proper divisors (2605066).

2778704 is a wasteful number, since it uses less digits than its factorization.

2778704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173677 (or 173671 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 2778704 is about 1666.9445101742. The cubic root of 2778704 is about 140.5877332689.

The spelling of 2778704 in words is "two million, seven hundred seventy-eight thousand, seven hundred four".