2864520 has 96 divisors (see below), whose sum is σ = 9523800. Its totient is φ = 746496.

The previous prime is 2864479. The next prime is 2864527. The reversal of 2864520 is 254682.

2864520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2566404 + 298116 = 1602^2 + 546^2 .

It is not an unprimeable number, because it can be changed into a prime (2864527) 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 23 ways as a sum of consecutive naturals, for example, 26226 + ... + 26334.

2^2864520 is an apocalyptic number.

2864520 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 2864520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4761900).

2864520 is an abundant number, since it is smaller than the sum of its proper divisors (6659280).

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

2864520 is a wasteful number, since it uses less digits than its factorization.

2864520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 2864520 is about 1692.4892909558. The cubic root of 2864520 is about 142.0203634091.

The spelling of 2864520 in words is "two million, eight hundred sixty-four thousand, five hundred twenty".