33428207 has 4 divisors (see below), whose sum is σ = 33465120. Its totient is φ = 33391296.

The previous prime is 33428189. The next prime is 33428251. The reversal of 33428207 is 70282433.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 33428207 - 2¹⁰ = 33427183 is a prime.

It is a super-2 number, since 2×33428207² = 2234890046469698, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33428207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33428257) by changing a digit.

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, 17063 + ... + 18920.

It is an arithmetic number, because the mean of its divisors is an integer number (8366280).

Almost surely, 2^33428207 is an apocalyptic number.

33428207 is a deficient number, since it is larger than the sum of its proper divisors (36913).

33428207 is an equidigital number, since it uses as much as digits as its factorization.

33428207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36912.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 33428207 is about 5781.7131544206. The cubic root of 33428207 is about 322.1348373731.

The spelling of 33428207 in words is "thirty-three million, four hundred twenty-eight thousand, two hundred seven".