33530004220 has 48 divisors (see below), whose sum is σ = 72088299360. Its totient is φ = 13093226496.

The previous prime is 33530004203. The next prime is 33530004229. The reversal of 33530004220 is 2240003533.

It is a super-2 number, since 2×33530004220² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33530004191 and 33530004200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33530004229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1821784 + ... + 1840096.

It is an arithmetic number, because the mean of its divisors is an integer number (1501839570).

Almost surely, 2^33530004220 is an apocalyptic number.

It is an amenable number.

33530004220 is an abundant number, since it is smaller than the sum of its proper divisors (38558295140).

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

33530004220 is a wasteful number, since it uses less digits than its factorization.

33530004220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20494 (or 20492 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 22.

Adding to 33530004220 its reverse (2240003533), we get a palindrome (35770007753).

The spelling of 33530004220 in words is "thirty-three billion, five hundred thirty million, four thousand, two hundred twenty".