30420333 has 16 divisors (see below), whose sum is σ = 46622400. Its totient is φ = 19580400.

The previous prime is 30420317. The next prime is 30420337. The reversal of 30420333 is 33302403.

It is not a de Polignac number, because 30420333 - 2⁴ = 30420317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30420337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18643 + ... + 20208.

It is an arithmetic number, because the mean of its divisors is an integer number (2913900).

Almost surely, 2^30420333 is an apocalyptic number.

It is an amenable number.

30420333 is a deficient number, since it is larger than the sum of its proper divisors (16202067).

30420333 is a wasteful number, since it uses less digits than its factorization.

30420333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38889 (or 38883 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 18.

The square root of 30420333 is about 5515.4630811927. The cubic root of 30420333 is about 312.1677167797.

Adding to 30420333 its reverse (33302403), we get a palindrome (63722736).

The spelling of 30420333 in words is "thirty million, four hundred twenty thousand, three hundred thirty-three".