2790887 has 4 divisors (see below), whose sum is σ = 3044616. Its totient is φ = 2537160.

The previous prime is 2790883. The next prime is 2790901. The reversal of 2790887 is 7880972.

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

It is a cyclic number.

It is not a de Polignac number, because 2790887 - 2² = 2790883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2790883) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 126848 + ... + 126869.

It is an arithmetic number, because the mean of its divisors is an integer number (761154).

2^2790887 is an apocalyptic number.

2790887 is a deficient number, since it is larger than the sum of its proper divisors (253729).

2790887 is a wasteful number, since it uses less digits than its factorization.

2790887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253728.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 2790887 is about 1670.5948042539. The cubic root of 2790887 is about 140.7928988488.

The spelling of 2790887 in words is "two million, seven hundred ninety thousand, eight hundred eighty-seven".