2869856 has 48 divisors (see below), whose sum is σ = 6386688. Its totient is φ = 1257600.

The previous prime is 2869837. The next prime is 2869859. The reversal of 2869856 is 6589682.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2869859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10781 + ... + 11043.

It is an arithmetic number, because the mean of its divisors is an integer number (133056).

2^2869856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2869856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3193344).

2869856 is an abundant number, since it is smaller than the sum of its proper divisors (3516832).

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

2869856 is a wasteful number, since it uses less digits than its factorization.

2869856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 307 counting only the distinct ones).

The product of its digits is 207360, while the sum is 44.

The square root of 2869856 is about 1694.0649338204. The cubic root of 2869856 is about 142.1084934264.

The spelling of 2869856 in words is "two million, eight hundred sixty-nine thousand, eight hundred fifty-six".