30345012 has 36 divisors (see below), whose sum is σ = 77145796. Its totient is φ = 10056960.

The previous prime is 30344989. The next prime is 30345013. The reversal of 30345012 is 21054303.

It can be written as a sum of positive squares in 2 ways, for example, as 1572516 + 28772496 = 1254^2 + 5364^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30345013) 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 11 ways as a sum of consecutive naturals, for example, 4188 + ... + 8844.

Almost surely, 2^30345012 is an apocalyptic number.

It is an amenable number.

30345012 is an abundant number, since it is smaller than the sum of its proper divisors (46800784).

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

30345012 is a wasteful number, since it uses less digits than its factorization.

30345012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4848 (or 4843 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 30345012 is about 5508.6306828467. The cubic root of 30345012 is about 311.9098605482.

Adding to 30345012 its reverse (21054303), we get a palindrome (51399315).

The spelling of 30345012 in words is "thirty million, three hundred forty-five thousand, twelve".