2133906 has 8 divisors (see below), whose sum is σ = 4267824. Its totient is φ = 711300.

The previous prime is 2133899. The next prime is 2133949. The reversal of 2133906 is 6093312.

It is a sphenic number, since it is the product of 3 distinct primes.

2133906 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177820 + ... + 177831.

It is an arithmetic number, because the mean of its divisors is an integer number (533478).

2^2133906 is an apocalyptic number.

2133906 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2133906 is a wasteful number, since it uses less digits than its factorization.

2133906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355656.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 2133906 is about 1460.7895125582. The cubic root of 2133906 is about 128.7434357416.

The spelling of 2133906 in words is "two million, one hundred thirty-three thousand, nine hundred six".