33028129 has 4 divisors (see below), whose sum is σ = 34167060. Its totient is φ = 31889200.

The previous prime is 33028123. The next prime is 33028133. The reversal of 33028129 is 92182033.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92182033 = 181 ⋅509293.

It can be written as a sum of positive squares in 2 ways, for example, as 18190225 + 14837904 = 4265^2 + 3852^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33028129 is a prime.

It is a pancake number, because a pancake can be divided into 33028129 parts by 8127 straight cuts.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33028097 and 33028106.

It is not an unprimeable number, because it can be changed into a prime (33028123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569422 + ... + 569479.

It is an arithmetic number, because the mean of its divisors is an integer number (8541765).

Almost surely, 2^33028129 is an apocalyptic number.

It is an amenable number.

33028129 is a deficient number, since it is larger than the sum of its proper divisors (1138931).

33028129 is a wasteful number, since it uses less digits than its factorization.

33028129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138930.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 33028129 is about 5747.0104402202. The cubic root of 33028129 is about 320.8445432113.

The spelling of 33028129 in words is "thirty-three million, twenty-eight thousand, one hundred twenty-nine".