2864240 has 20 divisors (see below), whose sum is σ = 6659544. Its totient is φ = 1145664.

The previous prime is 2864237. The next prime is 2864249. The reversal of 2864240 is 424682.

2864240 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 (20).

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2864249) 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 3 ways as a sum of consecutive naturals, for example, 17822 + ... + 17981.

2^2864240 is an apocalyptic number.

2864240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2864240 is an abundant number, since it is smaller than the sum of its proper divisors (3795304).

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

2864240 is a wasteful number, since it uses less digits than its factorization.

2864240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35816 (or 35810 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 2864240 is about 1692.4065705379. The cubic root of 2864240 is about 142.0157358743.

It can be divided in two parts, 28642 and 40, that added together give a palindrome (28682).

The spelling of 2864240 in words is "two million, eight hundred sixty-four thousand, two hundred forty".