330628281 has 4 divisors (see below), whose sum is σ = 440837712. Its totient is φ = 220418852.

The previous prime is 330628279. The next prime is 330628301. The reversal of 330628281 is 182826033.

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 330628281 - 2¹ = 330628279 is a prime.

It is a super-2 number, since 2×330628281² = 218630120394029922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (330628231) 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, 55104711 + ... + 55104716.

It is an arithmetic number, because the mean of its divisors is an integer number (110209428).

Almost surely, 2^330628281 is an apocalyptic number.

It is an amenable number.

330628281 is a deficient number, since it is larger than the sum of its proper divisors (110209431).

330628281 is a wasteful number, since it uses less digits than its factorization.

330628281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110209430.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 330628281 is about 18183.1867669009. The cubic root of 330628281 is about 691.4805992814.

The spelling of 330628281 in words is "three hundred thirty million, six hundred twenty-eight thousand, two hundred eighty-one".