33161856 has 192 divisors, whose sum is σ = 110502720. Its totient is φ = 8626176.

The previous prime is 33161831. The next prime is 33161867. The reversal of 33161856 is 65816133.

It is a tau number, because it is divible by the number of its divisors (192).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 454236 + ... + 454308.

It is an arithmetic number, because the mean of its divisors is an integer number (575535).

Almost surely, 2^33161856 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 33161856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55251360).

33161856 is an abundant number, since it is smaller than the sum of its proper divisors (77340864).

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

33161856 is a wasteful number, since it uses less digits than its factorization.

33161856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 98 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 33161856 is about 5758.6331711614. The cubic root of 33161856 is about 321.2769806809.

Adding to 33161856 its reverse (65816133), we get a palindrome (98977989).

The spelling of 33161856 in words is "thirty-three million, one hundred sixty-one thousand, eight hundred fifty-six".