30236140 has 24 divisors (see below), whose sum is σ = 69268752. Its totient is φ = 10994880.

The previous prime is 30236111. The next prime is 30236189. The reversal of 30236140 is 4163203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68499 + ... + 68938.

It is an arithmetic number, because the mean of its divisors is an integer number (2886198).

Almost surely, 2^30236140 is an apocalyptic number.

It is an amenable number.

30236140 is an abundant number, since it is smaller than the sum of its proper divisors (39032612).

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

30236140 is a wasteful number, since it uses less digits than its factorization.

30236140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137457 (or 137455 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 30236140 is about 5498.7398556397. The cubic root of 30236140 is about 311.5363895766.

Adding to 30236140 its reverse (4163203), we get a palindrome (34399343).

The spelling of 30236140 in words is "thirty million, two hundred thirty-six thousand, one hundred forty".