210428033 has 4 divisors (see below), whose sum is σ = 210713520. Its totient is φ = 210142548.

The previous prime is 210428011. The next prime is 210428107. The reversal of 210428033 is 330824012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 210428033 - 2¹⁸ = 210165889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210428003) 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, 141635 + ... + 143112.

It is an arithmetic number, because the mean of its divisors is an integer number (52678380).

Almost surely, 2^210428033 is an apocalyptic number.

It is an amenable number.

210428033 is a deficient number, since it is larger than the sum of its proper divisors (285487).

210428033 is an equidigital number, since it uses as much as digits as its factorization.

210428033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285486.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 210428033 is about 14506.1377699235. The cubic root of 210428033 is about 594.7957616461.

The spelling of 210428033 in words is "two hundred ten million, four hundred twenty-eight thousand, thirty-three".