2049878 has 4 divisors (see below), whose sum is σ = 3074820. Its totient is φ = 1024938.

The previous prime is 2049863. The next prime is 2049893. The reversal of 2049878 is 8789402.

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

It is an interprime number because it is at equal distance from previous prime (2049863) and next prime (2049893).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512468 + ... + 512471.

It is an arithmetic number, because the mean of its divisors is an integer number (768705).

2^2049878 is an apocalyptic number.

2049878 is a deficient number, since it is larger than the sum of its proper divisors (1024942).

2049878 is a wasteful number, since it uses less digits than its factorization.

2049878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024941.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 2049878 is about 1431.7395014457. The cubic root of 2049878 is about 127.0308892149.

The spelling of 2049878 in words is "two million, forty-nine thousand, eight hundred seventy-eight".