2864862 has 128 divisors (see below), whose sum is σ = 8709120. Its totient is φ = 673920.

The previous prime is 2864843. The next prime is 2864867. The reversal of 2864862 is 2684682.

2864862 is a `hidden beast` number, since 2 + 8 + 648 + 6 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2864867) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 54028 + ... + 54080.

It is an arithmetic number, because the mean of its divisors is an integer number (68040).

2^2864862 is an apocalyptic number.

2864862 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2864862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4354560).

2864862 is an abundant number, since it is smaller than the sum of its proper divisors (5844258).

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

2864862 is a wasteful number, since it uses less digits than its factorization.

2864862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95 (or 89 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 2864862 is about 1692.5903225530. The cubic root of 2864862 is about 142.0260152032.

The spelling of 2864862 in words is "two million, eight hundred sixty-four thousand, eight hundred sixty-two".