33030144 has 120 divisors (see below), whose sum is σ = 109051800. Its totient is φ = 9437184.

The previous prime is 33030121. The next prime is 33030163. The reversal of 33030144 is 44103033.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 2.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4718589 + ... + 4718595.

It is an arithmetic number, because the mean of its divisors is an integer number (908765).

Almost surely, 2^33030144 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 33030144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54525900).

33030144 is an abundant number, since it is smaller than the sum of its proper divisors (76021656).

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

33030144 is an frugal number, since it uses more digits than its factorization.

33030144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51 (or 12 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 33030144 is about 5747.1857460848. The cubic root of 33030144 is about 320.8510678377.

Adding to 33030144 its reverse (44103033), we get a palindrome (77133177).

The spelling of 33030144 in words is "thirty-three million, thirty thousand, one hundred forty-four".