30472212 has 12 divisors (see below), whose sum is σ = 71101856. Its totient is φ = 10157400.

The previous prime is 30472199. The next prime is 30472213. The reversal of 30472212 is 21227403.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30472213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1269664 + ... + 1269687.

Almost surely, 2^30472212 is an apocalyptic number.

It is an amenable number.

30472212 is an abundant number, since it is smaller than the sum of its proper divisors (40629644).

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

30472212 is a wasteful number, since it uses less digits than its factorization.

30472212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2539358 (or 2539356 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 30472212 is about 5520.1641279947. The cubic root of 30472212 is about 312.3450734989.

Adding to 30472212 its reverse (21227403), we get a palindrome (51699615).

The spelling of 30472212 in words is "thirty million, four hundred seventy-two thousand, two hundred twelve".