2738978 has 16 divisors (see below), whose sum is σ = 4677696. Its totient is φ = 1190640.

The previous prime is 2738947. The next prime is 2739013. The reversal of 2738978 is 8798372.

It is a happy number.

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, 2201 + ... + 3212.

It is an arithmetic number, because the mean of its divisors is an integer number (292356).

2^2738978 is an apocalyptic number.

2738978 is a deficient number, since it is larger than the sum of its proper divisors (1938718).

2738978 is a wasteful number, since it uses less digits than its factorization.

2738978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449.

The product of its digits is 169344, while the sum is 44.

The square root of 2738978 is about 1654.9858005433. The cubic root of 2738978 is about 139.9145396797.

The spelling of 2738978 in words is "two million, seven hundred thirty-eight thousand, nine hundred seventy-eight".