30402012 has 24 divisors (see below), whose sum is σ = 72856336. Its totient is φ = 9859968.

The previous prime is 30401981. The next prime is 30402013. The reversal of 30402012 is 21020403.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30402013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33793 + ... + 34680.

Almost surely, 2^30402012 is an apocalyptic number.

It is an amenable number.

30402012 is an abundant number, since it is smaller than the sum of its proper divisors (42454324).

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

30402012 is a wasteful number, since it uses less digits than its factorization.

30402012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68517 (or 68515 counting only the distinct ones).

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

The square root of 30402012 is about 5513.8019550941. The cubic root of 30402012 is about 312.1050353129.

Adding to 30402012 its reverse (21020403), we get a palindrome (51422415).

The spelling of 30402012 in words is "thirty million, four hundred two thousand, twelve".