33128330 has 8 divisors (see below), whose sum is σ = 59631012. Its totient is φ = 13251328.

The previous prime is 33128327. The next prime is 33128363. The reversal of 33128330 is 3382133.

It can be written as a sum of positive squares in 2 ways, for example, as 27741289 + 5387041 = 5267^2 + 2321^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33128296 and 33128305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1656407 + ... + 1656426.

Almost surely, 2^33128330 is an apocalyptic number.

33128330 is a deficient number, since it is larger than the sum of its proper divisors (26502682).

33128330 is a wasteful number, since it uses less digits than its factorization.

33128330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3312840.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 33128330 is about 5755.7215012542. The cubic root of 33128330 is about 321.1686758874.

The spelling of 33128330 in words is "thirty-three million, one hundred twenty-eight thousand, three hundred thirty".