2928805 has 24 divisors (see below), whose sum is σ = 3983616. Its totient is φ = 2064480.

The previous prime is 2928791. The next prime is 2928817. The reversal of 2928805 is 5088292.

It is not a de Polignac number, because 2928805 - 2⁷ = 2928677 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

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, 28384 + ... + 28486.

It is an arithmetic number, because the mean of its divisors is an integer number (165984).

2^2928805 is an apocalyptic number.

It is an amenable number.

2928805 is a deficient number, since it is larger than the sum of its proper divisors (1054811).

2928805 is a wasteful number, since it uses less digits than its factorization.

2928805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 2928805 is about 1711.3751780367. The cubic root of 2928805 is about 143.0749114407.

The spelling of 2928805 in words is "two million, nine hundred twenty-eight thousand, eight hundred five".