2130864 has 40 divisors (see below), whose sum is σ = 5571072. Its totient is φ = 701760.

The previous prime is 2130857. The next prime is 2130901. The reversal of 2130864 is 4680312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4729 + ... + 5159.

2^2130864 is an apocalyptic number.

2130864 is a gapful number since it is divisible by the number (24) 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 2130864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2785536).

2130864 is an abundant number, since it is smaller than the sum of its proper divisors (3440208).

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

2130864 is a wasteful number, since it uses less digits than its factorization.

2130864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545 (or 539 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 2130864 is about 1459.7479234443. The cubic root of 2130864 is about 128.6822297061.

The spelling of 2130864 in words is "two million, one hundred thirty thousand, eight hundred sixty-four".