30440212 has 36 divisors (see below), whose sum is σ = 59192980. Its totient is φ = 13685760.

The previous prime is 30440209. The next prime is 30440213. The reversal of 30440212 is 21204403.

It can be written as a sum of positive squares in 2 ways, for example, as 27185796 + 3254416 = 5214^2 + 1804^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30440213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52468 + ... + 53044.

Almost surely, 2^30440212 is an apocalyptic number.

It is an amenable number.

30440212 is a deficient number, since it is larger than the sum of its proper divisors (28752768).

30440212 is a wasteful number, since it uses less digits than its factorization.

30440212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 30440212 is about 5517.2649021050. The cubic root of 30440212 is about 312.2357001556.

Adding to 30440212 its reverse (21204403), we get a palindrome (51644615).

The spelling of 30440212 in words is "thirty million, four hundred forty thousand, two hundred twelve".