33520164 has 12 divisors (see below), whose sum is σ = 78213744. Its totient is φ = 11173384.

The previous prime is 33520147. The next prime is 33520169. The reversal of 33520164 is 46102533.

It is a happy number.

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

It is a super-2 number, since 2×33520164² = 2247202789173792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33520169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1396662 + ... + 1396685.

It is an arithmetic number, because the mean of its divisors is an integer number (6517812).

Almost surely, 2^33520164 is an apocalyptic number.

It is an amenable number.

33520164 is an abundant number, since it is smaller than the sum of its proper divisors (44693580).

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

33520164 is a wasteful number, since it uses less digits than its factorization.

33520164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2793354 (or 2793352 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 33520164 is about 5789.6600936497. The cubic root of 33520164 is about 322.4299517354.

Adding to 33520164 its reverse (46102533), we get a palindrome (79622697).

The spelling of 33520164 in words is "thirty-three million, five hundred twenty thousand, one hundred sixty-four".