30428353 has 4 divisors (see below), whose sum is σ = 30483540. Its totient is φ = 30373168.

The previous prime is 30428347. The next prime is 30428369. The reversal of 30428353 is 35382403.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10608049 + 19820304 = 3257^2 + 4452^2 .

It is a cyclic number.

It is not a de Polignac number, because 30428353 - 2¹³ = 30420161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30428323) 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, 26758 + ... + 27871.

It is an arithmetic number, because the mean of its divisors is an integer number (7620885).

Almost surely, 2^30428353 is an apocalyptic number.

It is an amenable number.

30428353 is a deficient number, since it is larger than the sum of its proper divisors (55187).

30428353 is an equidigital number, since it uses as much as digits as its factorization.

30428353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55186.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 30428353 is about 5516.1900801187. The cubic root of 30428353 is about 312.1951476114.

The spelling of 30428353 in words is "thirty million, four hundred twenty-eight thousand, three hundred fifty-three".