2040778 has 4 divisors (see below), whose sum is σ = 3061170. Its totient is φ = 1020388.

The previous prime is 2040769. The next prime is 2040781. The reversal of 2040778 is 8770402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1054729 + 986049 = 1027^2 + 993^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510193 + ... + 510196.

2^2040778 is an apocalyptic number.

2040778 is a deficient number, since it is larger than the sum of its proper divisors (1020392).

2040778 is a wasteful number, since it uses less digits than its factorization.

2040778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020391.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 2040778 is about 1428.5580142227. The cubic root of 2040778 is about 126.8426347755.

The spelling of 2040778 in words is "two million, forty thousand, seven hundred seventy-eight".