33300020 has 48 divisors (see below), whose sum is σ = 75790848. Its totient is φ = 12216960.

The previous prime is 33300019. The next prime is 33300023. The reversal of 33300020 is 2000333.

It is a happy number.

It is a super-2 number, since 2×33300020² = 2217782664000800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33299974 and 33300010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33300023) 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, 54557 + ... + 55163.

It is an arithmetic number, because the mean of its divisors is an integer number (1578976).

Almost surely, 2^33300020 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 33300020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37895424).

33300020 is an abundant number, since it is smaller than the sum of its proper divisors (42490828).

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

33300020 is a wasteful number, since it uses less digits than its factorization.

33300020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 838 counting only the distinct ones).

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

The square root of 33300020 is about 5770.6169514186. The cubic root of 33300020 is about 321.7225469004.

Adding to 33300020 its reverse (2000333), we get a palindrome (35300353).

The spelling of 33300020 in words is "thirty-three million, three hundred thousand, twenty".