2864040 has 64 divisors (see below), whose sum is σ = 8899200. Its totient is φ = 736512.

The previous prime is 2864033. The next prime is 2864051. The reversal of 2864040 is 404682.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2864040.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3069 + ... + 3891.

It is an arithmetic number, because the mean of its divisors is an integer number (139050).

2^2864040 is an apocalyptic number.

2864040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2864040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4449600).

2864040 is an abundant number, since it is smaller than the sum of its proper divisors (6035160).

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

2864040 is a wasteful number, since it uses less digits than its factorization.

2864040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866 (or 862 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 2864040 is about 1692.3474820497. The cubic root of 2864040 is about 142.0124303077.

It can be divided in two parts, 28640 and 40, that added together give a triangular number (28680 = T₂₃₉).

The spelling of 2864040 in words is "two million, eight hundred sixty-four thousand, forty".