2887905 has 16 divisors (see below), whose sum is σ = 4864320. Its totient is φ = 1459008.

The previous prime is 2887883. The next prime is 2887921. The reversal of 2887905 is 5097882.

It is not a de Polignac number, because 2887905 - 2⁷ = 2887777 is a prime.

2887905 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4782 + ... + 5351.

It is an arithmetic number, because the mean of its divisors is an integer number (304020).

2^2887905 is an apocalyptic number.

It is an amenable number.

2887905 is a deficient number, since it is larger than the sum of its proper divisors (1976415).

2887905 is a wasteful number, since it uses less digits than its factorization.

2887905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10160.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 2887905 is about 1699.3837118203. The cubic root of 2887905 is about 142.4057856768.

The spelling of 2887905 in words is "two million, eight hundred eighty-seven thousand, nine hundred five".