2023778 has 4 divisors (see below), whose sum is σ = 3035670. Its totient is φ = 1011888.

The previous prime is 2023753. The next prime is 2023783. The reversal of 2023778 is 8773202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8773202 = 2 ⋅4386601.

It can be written as a sum of positive squares in only one way, i.e., 1841449 + 182329 = 1357^2 + 427^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2023778.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505943 + ... + 505946.

2^2023778 is an apocalyptic number.

2023778 is a deficient number, since it is larger than the sum of its proper divisors (1011892).

2023778 is a wasteful number, since it uses less digits than its factorization.

2023778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011891.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 2023778 is about 1422.5955152467. The cubic root of 2023778 is about 126.4894459160.

The spelling of 2023778 in words is "two million, twenty-three thousand, seven hundred seventy-eight".