33144030 has 48 divisors (see below), whose sum is σ = 86963760. Its totient is φ = 8757504.

The previous prime is 33144019. The next prime is 33144073. The reversal of 33144030 is 3044133.

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

It is a junction number, because it is equal to n+sod(n) for n = 33143994 and 33144012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8541 + ... + 11799.

It is an arithmetic number, because the mean of its divisors is an integer number (1811745).

Almost surely, 2^33144030 is an apocalyptic number.

33144030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 33144030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43481880).

33144030 is an abundant number, since it is smaller than the sum of its proper divisors (53819730).

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

33144030 is a wasteful number, since it uses less digits than its factorization.

33144030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3385 (or 3382 counting only the distinct ones).

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

The square root of 33144030 is about 5757.0851999949. The cubic root of 33144030 is about 321.2194033854.

Adding to 33144030 its reverse (3044133), we get a palindrome (36188163).

The spelling of 33144030 in words is "thirty-three million, one hundred forty-four thousand, thirty".