2862640 has 40 divisors (see below), whose sum is σ = 7262928. Its totient is φ = 1040640.

The previous prime is 2862623. The next prime is 2862641. The reversal of 2862640 is 462682.

2862640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2862599 and 2862608.

It is not an unprimeable number, because it can be changed into a prime (2862641) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 747 + ... + 2506.

2^2862640 is an apocalyptic number.

2862640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2862640 is an abundant number, since it is smaller than the sum of its proper divisors (4400288).

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

2862640 is a wasteful number, since it uses less digits than its factorization.

2862640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277 (or 3271 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 2862640 is about 1691.9338048517. The cubic root of 2862640 is about 141.9892870315.

It can be divided in two parts, 286 and 2640, that added together give a triangular number (2926 = T₇₆).

The spelling of 2862640 in words is "two million, eight hundred sixty-two thousand, six hundred forty".