2808630 has 48 divisors (see below), whose sum is σ = 7969104. Its totient is φ = 680640.

The previous prime is 2808607. The next prime is 2808647. The reversal of 2808630 is 368082.

2808630 is a `hidden beast` number, since 28 + 0 + 8 + 630 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2808594 and 2808603.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 429 + ... + 2408.

It is an arithmetic number, because the mean of its divisors is an integer number (166023).

2^2808630 is an apocalyptic number.

2808630 is an abundant number, since it is smaller than the sum of its proper divisors (5160474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2808630 is a wasteful number, since it uses less digits than its factorization.

2808630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861 (or 2858 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 2808630 is about 1675.8967748641. The cubic root of 2808630 is about 141.0906313351.

The spelling of 2808630 in words is "two million, eight hundred eight thousand, six hundred thirty".