33809132 has 48 divisors (see below), whose sum is σ = 71984640. Its totient is φ = 13571712.

The previous prime is 33809129. The next prime is 33809159. The reversal of 33809132 is 23190833.

It is a super-2 number, since 2×33809132² = 2286114813186848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33809095 and 33809104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54488 + ... + 55104.

It is an arithmetic number, because the mean of its divisors is an integer number (1499680).

Almost surely, 2^33809132 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 33809132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35992320).

33809132 is an abundant number, since it is smaller than the sum of its proper divisors (38175508).

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

33809132 is a wasteful number, since it uses less digits than its factorization.

33809132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750 (or 748 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 33809132 is about 5814.5620643347. The cubic root of 33809132 is about 323.3538282494.

Adding to 33809132 its reverse (23190833), we get a palindrome (56999965).

The spelling of 33809132 in words is "thirty-three million, eight hundred nine thousand, one hundred thirty-two".