33030020 has 48 divisors (see below), whose sum is σ = 71702400. Its totient is φ = 12773376.

The previous prime is 33030007. The next prime is 33030073. The reversal of 33030020 is 2003033.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 33029983 and 33030010.

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, 165881 + ... + 166079.

It is an arithmetic number, because the mean of its divisors is an integer number (1493800).

Almost surely, 2^33030020 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 33030020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35851200).

33030020 is an abundant number, since it is smaller than the sum of its proper divisors (38672380).

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

33030020 is a wasteful number, since it uses less digits than its factorization.

33030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 11.

The square root of 33030020 is about 5747.1749581860. The cubic root of 33030020 is about 320.8506663299.

Adding to 33030020 its reverse (2003033), we get a palindrome (35033053).

The spelling of 33030020 in words is "thirty-three million, thirty thousand, twenty".