30081012 has 48 divisors (see below), whose sum is σ = 76148352. Its totient is φ = 9187200.

The previous prime is 30081011. The next prime is 30081019. The reversal of 30081012 is 21018003.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30080982 and 30081000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30081011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22918 + ... + 24194.

It is an arithmetic number, because the mean of its divisors is an integer number (1586424).

Almost surely, 2^30081012 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 30081012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38074176).

30081012 is an abundant number, since it is smaller than the sum of its proper divisors (46067340).

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

30081012 is a wasteful number, since it uses less digits than its factorization.

30081012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448 (or 1446 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 30081012 is about 5484.6159391520. The cubic root of 30081012 is about 311.0026915673.

Adding to 30081012 its reverse (21018003), we get a palindrome (51099015).

The spelling of 30081012 in words is "thirty million, eighty-one thousand, twelve".