2998905 has 40 divisors (see below), whose sum is σ = 5940672. Its totient is φ = 1265472.

The previous prime is 2998883. The next prime is 2998921. The reversal of 2998905 is 5098992.

It is not a de Polignac number, because 2998905 - 2⁶ = 2998841 is a prime.

It is an Ulam number.

2998905 is a lucky number.

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 230679 + ... + 230691.

2^2998905 is an apocalyptic number.

It is an amenable number.

2998905 is a deficient number, since it is larger than the sum of its proper divisors (2941767).

2998905 is an frugal number, since it uses more digits than its factorization.

2998905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 2998905 is about 1731.7346794472. The cubic root of 2998905 is about 144.2074075256.

The spelling of 2998905 in words is "two million, nine hundred ninety-eight thousand, nine hundred five".