30403212 has 24 divisors (see below), whose sum is σ = 81075456. Its totient is φ = 8686608.

The previous prime is 30403183. The next prime is 30403213. The reversal of 30403212 is 21230403.

It is a junction number, because it is equal to n+sod(n) for n = 30403191 and 30403200.

It is not an unprimeable number, because it can be changed into a prime (30403213) 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, 180888 + ... + 181055.

It is an arithmetic number, because the mean of its divisors is an integer number (3378144).

Almost surely, 2^30403212 is an apocalyptic number.

It is an amenable number.

30403212 is an abundant number, since it is smaller than the sum of its proper divisors (50672244).

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

30403212 is a wasteful number, since it uses less digits than its factorization.

30403212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361957 (or 361955 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 30403212 is about 5513.9107718569. The cubic root of 30403212 is about 312.1091416323.

Adding to 30403212 its reverse (21230403), we get a palindrome (51633615).

The spelling of 30403212 in words is "thirty million, four hundred three thousand, two hundred twelve".