30405012 has 24 divisors (see below), whose sum is σ = 77394912. Its totient is φ = 9213600.

The previous prime is 30405007. The next prime is 30405019. The reversal of 30405012 is 21050403.

It is a junction number, because it is equal to n+sod(n) for n = 30404982 and 30405000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30405019) 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, 115039 + ... + 115302.

It is an arithmetic number, because the mean of its divisors is an integer number (3224788).

Almost surely, 2^30405012 is an apocalyptic number.

It is an amenable number.

30405012 is an abundant number, since it is smaller than the sum of its proper divisors (46989900).

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

30405012 is a wasteful number, since it uses less digits than its factorization.

30405012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230359 (or 230357 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 30405012 is about 5514.0739929747. The cubic root of 30405012 is about 312.1153009088.

Adding to 30405012 its reverse (21050403), we get a palindrome (51455415).

The spelling of 30405012 in words is "thirty million, four hundred five thousand, twelve".