33028973 has 6 divisors (see below), whose sum is σ = 34859214. Its totient is φ = 31290264.

The previous prime is 33028969. The next prime is 33028993. The reversal of 33028973 is 37982033.

It can be written as a sum of positive squares in only one way, i.e., 32924644 + 104329 = 5738^2 + 323^2 .

It is not a de Polignac number, because 33028973 - 2² = 33028969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33028993) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45386 + ... + 46107.

It is an arithmetic number, because the mean of its divisors is an integer number (5809869).

Almost surely, 2^33028973 is an apocalyptic number.

It is an amenable number.

33028973 is a deficient number, since it is larger than the sum of its proper divisors (1830241).

33028973 is an equidigital number, since it uses as much as digits as its factorization.

33028973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91531 (or 91512 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 33028973 is about 5747.0838692332. The cubic root of 33028973 is about 320.8472761393.

The spelling of 33028973 in words is "thirty-three million, twenty-eight thousand, nine hundred seventy-three".