33331164 has 12 divisors (see below), whose sum is σ = 77772744. Its totient is φ = 11110384.

The previous prime is 33331153. The next prime is 33331171. The reversal of 33331164 is 46113333.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×33331164² = 2221932987189792, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1388787 + ... + 1388810.

It is an arithmetic number, because the mean of its divisors is an integer number (6481062).

Almost surely, 2^33331164 is an apocalyptic number.

It is an amenable number.

33331164 is an abundant number, since it is smaller than the sum of its proper divisors (44441580).

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

33331164 is a wasteful number, since it uses less digits than its factorization.

33331164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777604 (or 2777602 counting only the distinct ones).

The product of its digits is 1944, while the sum is 24.

The square root of 33331164 is about 5773.3148190619. The cubic root of 33331164 is about 321.8228131561.

Adding to 33331164 its reverse (46113333), we get a palindrome (79444497).

The spelling of 33331164 in words is "thirty-three million, three hundred thirty-one thousand, one hundred sixty-four".