2130906 has 16 divisors (see below), whose sum is σ = 4276800. Its totient is φ = 707808.

The previous prime is 2130901. The next prime is 2130911. The reversal of 2130906 is 6090312.

It is an interprime number because it is at equal distance from previous prime (2130901) and next prime (2130911).

It is not an unprimeable number, because it can be changed into a prime (2130901) 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, 2230 + ... + 3038.

It is an arithmetic number, because the mean of its divisors is an integer number (267300).

2^2130906 is an apocalyptic number.

2130906 is an abundant number, since it is smaller than the sum of its proper divisors (2145894).

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

2130906 is a wasteful number, since it uses less digits than its factorization.

2130906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 2130906 is about 1459.7623094189. The cubic root of 2130906 is about 128.6830751563.

The spelling of 2130906 in words is "two million, one hundred thirty thousand, nine hundred six".