30240012 has 48 divisors (see below), whose sum is σ = 77438592. Its totient is φ = 9108480.

The previous prime is 30239999. The next prime is 30240013. The reversal of 30240012 is 21004203.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 30240012.

It is not an unprimeable number, because it can be changed into a prime (30240013) 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, 24883 + ... + 26069.

It is an arithmetic number, because the mean of its divisors is an integer number (1613304).

Almost surely, 2^30240012 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 30240012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38719296).

30240012 is an abundant number, since it is smaller than the sum of its proper divisors (47198580).

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

30240012 is a wasteful number, since it uses less digits than its factorization.

30240012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398 (or 1396 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 30240012 is about 5499.0919250364. The cubic root of 30240012 is about 311.5496873213.

Adding to 30240012 its reverse (21004203), we get a palindrome (51244215).

It can be divided in two parts, 30 and 240012, that added together give a palindrome (240042).

The spelling of 30240012 in words is "thirty million, two hundred forty thousand, twelve".