30220712 has 48 divisors (see below), whose sum is σ = 61150740. Its totient is φ = 13989888.

The previous prime is 30220669. The next prime is 30220717. The reversal of 30220712 is 21702203.

It can be written as a sum of positive squares in 2 ways, for example, as 29964676 + 256036 = 5474^2 + 506^2 .

It is not an unprimeable number, because it can be changed into a prime (30220717) 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 11 ways as a sum of consecutive naturals, for example, 156488 + ... + 156680.

Almost surely, 2^30220712 is an apocalyptic number.

It is an amenable number.

30220712 is an abundant number, since it is smaller than the sum of its proper divisors (30930028).

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

30220712 is a wasteful number, since it uses less digits than its factorization.

30220712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 30220712 is about 5497.3368097653. The cubic root of 30220712 is about 311.4833933814.

Adding to 30220712 its reverse (21702203), we get a palindrome (51922915).

The spelling of 30220712 in words is "thirty million, two hundred twenty thousand, seven hundred twelve".