30135144 has 32 divisors (see below), whose sum is σ = 81133920. Its totient is φ = 9272256.

The previous prime is 30135143. The next prime is 30135151. The reversal of 30135144 is 44153103.

It is a self number, because there is not a number n which added to its sum of digits gives 30135144.

It is not an unprimeable number, because it can be changed into a prime (30135143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47982 + ... + 48605.

It is an arithmetic number, because the mean of its divisors is an integer number (2535435).

Almost surely, 2^30135144 is an apocalyptic number.

It is an amenable number.

30135144 is an abundant number, since it is smaller than the sum of its proper divisors (50998776).

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

30135144 is a wasteful number, since it uses less digits than its factorization.

30135144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96609 (or 96605 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 30135144 is about 5489.5486153235. The cubic root of 30135144 is about 311.1891337571.

Adding to 30135144 its reverse (44153103), we get a palindrome (74288247).

The spelling of 30135144 in words is "thirty million, one hundred thirty-five thousand, one hundred forty-four".