2900864 has 32 divisors (see below), whose sum is σ = 5856840. Its totient is φ = 1431040.

The previous prime is 2900857. The next prime is 2900869. The reversal of 2900864 is 4680092.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2900869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16682 + ... + 16854.

2^2900864 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 2900864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2928420).

2900864 is an abundant number, since it is smaller than the sum of its proper divisors (2955976).

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

2900864 is a wasteful number, since it uses less digits than its factorization.

2900864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 2900864 is about 1703.1922968356. The cubic root of 2900864 is about 142.6184753917.

The spelling of 2900864 in words is "two million, nine hundred thousand, eight hundred sixty-four".