2047905 has 24 divisors (see below), whose sum is σ = 3759912. Its totient is φ = 1027584.

The previous prime is 2047883. The next prime is 2047919. The reversal of 2047905 is 5097402.

It can be written as a sum of positive squares in 4 ways, for example, as 42849 + 2005056 = 207^2 + 1416^2 .

It is not a de Polignac number, because 2047905 - 2⁶ = 2047841 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 574 + ... + 2103.

It is an arithmetic number, because the mean of its divisors is an integer number (156663).

2^2047905 is an apocalyptic number.

It is an amenable number.

2047905 is a deficient number, since it is larger than the sum of its proper divisors (1712007).

2047905 is a wasteful number, since it uses less digits than its factorization.

2047905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2705 (or 2702 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 2047905 is about 1431.0503135809. The cubic root of 2047905 is about 126.9901205451.

The spelling of 2047905 in words is "two million, forty-seven thousand, nine hundred five".