30120532 has 36 divisors (see below), whose sum is σ = 60458076. Its totient is φ = 13079040.

The previous prime is 30120487. The next prime is 30120533. The reversal of 30120532 is 23502103.

It can be written as a sum of positive squares in 6 ways, for example, as 133956 + 29986576 = 366^2 + 5476^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30120533) 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, 10182 + ... + 12802.

It is an arithmetic number, because the mean of its divisors is an integer number (1679391).

Almost surely, 2^30120532 is an apocalyptic number.

It is an amenable number.

30120532 is an abundant number, since it is smaller than the sum of its proper divisors (30337544).

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

30120532 is a wasteful number, since it uses less digits than its factorization.

30120532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668 (or 2653 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 30120532 is about 5488.2175612853. The cubic root of 30120532 is about 311.1388289175.

Adding to 30120532 its reverse (23502103), we get a palindrome (53622635).

The spelling of 30120532 in words is "thirty million, one hundred twenty thousand, five hundred thirty-two".