30235240 has 64 divisors (see below), whose sum is σ = 78744960. Its totient is φ = 10233600.

The previous prime is 30235237. The next prime is 30235243. The reversal of 30235240 is 4253203.

It is an interprime number because it is at equal distance from previous prime (30235237) and next prime (30235243).

It is not an unprimeable number, because it can be changed into a prime (30235243) 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, 22590 + ... + 23890.

It is an arithmetic number, because the mean of its divisors is an integer number (1230390).

Almost surely, 2^30235240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30235240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39372480).

30235240 is an abundant number, since it is smaller than the sum of its proper divisors (48509720).

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

30235240 is a wasteful number, since it uses less digits than its factorization.

30235240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402 (or 1398 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 30235240 is about 5498.6580180986. The cubic root of 30235240 is about 311.5332985126.

Adding to 30235240 its reverse (4253203), we get a palindrome (34488443).

The spelling of 30235240 in words is "thirty million, two hundred thirty-five thousand, two hundred forty".