33144729 has 8 divisors (see below), whose sum is σ = 45133440. Its totient is φ = 21626256.

The previous prime is 33144719. The next prime is 33144743. The reversal of 33144729 is 92744133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 33144729 - 2⁵ = 33144697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 33144729.

It is not an unprimeable number, because it can be changed into a prime (33144719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117394 + ... + 117675.

It is an arithmetic number, because the mean of its divisors is an integer number (5641680).

Almost surely, 2^33144729 is an apocalyptic number.

It is an amenable number.

33144729 is a deficient number, since it is larger than the sum of its proper divisors (11988711).

33144729 is a wasteful number, since it uses less digits than its factorization.

33144729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235119.

The product of its digits is 18144, while the sum is 33.

The square root of 33144729 is about 5757.1459074788. The cubic root of 33144729 is about 321.2216615174.

The spelling of 33144729 in words is "thirty-three million, one hundred forty-four thousand, seven hundred twenty-nine".