2745778 has 16 divisors (see below), whose sum is σ = 4870080. Its totient is φ = 1136016.

The previous prime is 2745767. The next prime is 2745781. The reversal of 2745778 is 8775472.

It is a self number, because there is not a number n which added to its sum of digits gives 2745778.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2976 + ... + 3787.

It is an arithmetic number, because the mean of its divisors is an integer number (304380).

2^2745778 is an apocalyptic number.

2745778 is a deficient number, since it is larger than the sum of its proper divisors (2124302).

2745778 is a wasteful number, since it uses less digits than its factorization.

2745778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6801.

The product of its digits is 109760, while the sum is 40.

The square root of 2745778 is about 1657.0389253123. The cubic root of 2745778 is about 140.0302315666.

The spelling of 2745778 in words is "two million, seven hundred forty-five thousand, seven hundred seventy-eight".