2840634 has 12 divisors (see below), whose sum is σ = 6154746. Its totient is φ = 946872.

The previous prime is 2840627. The next prime is 2840647. The reversal of 2840634 is 4360482.

2840634 is a `hidden beast` number, since 28 + 4 + 0 + 634 = 666.

2840634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1830609 + 1010025 = 1353^2 + 1005^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2840598 and 2840607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78889 + ... + 78924.

2^2840634 is an apocalyptic number.

2840634 is an abundant number, since it is smaller than the sum of its proper divisors (3314112).

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

2840634 is a wasteful number, since it uses less digits than its factorization.

2840634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157821 (or 157818 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 2840634 is about 1685.4180490312. The cubic root of 2840634 is about 141.6245121790.

The spelling of 2840634 in words is "two million, eight hundred forty thousand, six hundred thirty-four".