30223530 has 40 divisors (see below), whose sum is σ = 81269892. Its totient is φ = 8059392.

The previous prime is 30223513. The next prime is 30223549. The reversal of 30223530 is 3532203.

It can be written as a sum of positive squares in 2 ways, for example, as 27910089 + 2313441 = 5283^2 + 1521^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 17847 + ... + 19466.

Almost surely, 2^30223530 is an apocalyptic number.

30223530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30223530 is an abundant number, since it is smaller than the sum of its proper divisors (51046362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30223530 is a wasteful number, since it uses less digits than its factorization.

30223530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37332 (or 37323 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 18.

The square root of 30223530 is about 5497.5931097163. The cubic root of 30223530 is about 311.4930747430.

Adding to 30223530 its reverse (3532203), we get a palindrome (33755733).

It can be divided in two parts, 302 and 23530, that added together give a palindrome (23832).

The spelling of 30223530 in words is "thirty million, two hundred twenty-three thousand, five hundred thirty".