30102012 has 36 divisors (see below), whose sum is σ = 77169456. Its totient is φ = 9891840.

The previous prime is 30101999. The next prime is 30102031. The reversal of 30102012 is 21020103.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-4 number, since 4×30102012⁴ (a number of 31 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 30101985 and 30102003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3333 + ... + 8444.

It is an arithmetic number, because the mean of its divisors is an integer number (2143596).

Almost surely, 2^30102012 is an apocalyptic number.

It is an amenable number.

30102012 is an abundant number, since it is smaller than the sum of its proper divisors (47067444).

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

30102012 is a wasteful number, since it uses less digits than its factorization.

30102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11858 (or 11853 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 30102012 is about 5486.5300509521. The cubic root of 30102012 is about 311.0750465943.

Adding to 30102012 its reverse (21020103), we get a palindrome (51122115).

The spelling of 30102012 in words is "thirty million, one hundred two thousand, twelve".