30233640 has 32 divisors (see below), whose sum is σ = 90701280. Its totient is φ = 8062272.

The previous prime is 30233629. The next prime is 30233641. The reversal of 30233640 is 4633203.

It is not an unprimeable number, because it can be changed into a prime (30233641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125854 + ... + 126093.

It is an arithmetic number, because the mean of its divisors is an integer number (2834415).

Almost surely, 2^30233640 is an apocalyptic number.

30233640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30233640 is an abundant number, since it is smaller than the sum of its proper divisors (60467640).

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

30233640 is a wasteful number, since it uses less digits than its factorization.

30233640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251961 (or 251957 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 30233640 is about 5498.5125261292. The cubic root of 30233640 is about 311.5278031362.

Adding to 30233640 its reverse (4633203), we get a palindrome (34866843).

The spelling of 30233640 in words is "thirty million, two hundred thirty-three thousand, six hundred forty".