30233540 has 24 divisors (see below), whose sum is σ = 63696192. Its totient is φ = 12054240.

The previous prime is 30233527. The next prime is 30233561. The reversal of 30233540 is 4533203.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 7 ways as a sum of consecutive naturals, for example, 4337 + ... + 8903.

It is an arithmetic number, because the mean of its divisors is an integer number (2654008).

Almost surely, 2^30233540 is an apocalyptic number.

It is an amenable number.

30233540 is an abundant number, since it is smaller than the sum of its proper divisors (33462652).

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

30233540 is a wasteful number, since it uses less digits than its factorization.

30233540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4907 (or 4905 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 30233540 is about 5498.5034327533. The cubic root of 30233540 is about 311.5274596688.

Adding to 30233540 its reverse (4533203), we get a palindrome (34766743).

The spelling of 30233540 in words is "thirty million, two hundred thirty-three thousand, five hundred forty".