30012144 has 20 divisors (see below), whose sum is σ = 77531496. Its totient is φ = 10004032.

The previous prime is 30012139. The next prime is 30012149. The reversal of 30012144 is 44121003.

It is an interprime number because it is at equal distance from previous prime (30012139) and next prime (30012149).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30012149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312579 + ... + 312674.

Almost surely, 2^30012144 is an apocalyptic number.

It is an amenable number.

30012144 is an abundant number, since it is smaller than the sum of its proper divisors (47519352).

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

30012144 is a wasteful number, since it uses less digits than its factorization.

30012144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625264 (or 625258 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 30012144 is about 5478.3340533414. The cubic root of 30012144 is about 310.7651718633.

Adding to 30012144 its reverse (44121003), we get a palindrome (74133147).

The spelling of 30012144 in words is "thirty million, twelve thousand, one hundred forty-four".