30132820 has 12 divisors (see below), whose sum is σ = 63278964. Its totient is φ = 12053120.

The previous prime is 30132811. The next prime is 30132821. The reversal of 30132820 is 2823103.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12138256 + 17994564 = 3484^2 + 4242^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30132821) 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 3 ways as a sum of consecutive naturals, for example, 753301 + ... + 753340.

It is an arithmetic number, because the mean of its divisors is an integer number (5273247).

Almost surely, 2^30132820 is an apocalyptic number.

It is an amenable number.

30132820 is an abundant number, since it is smaller than the sum of its proper divisors (33146144).

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

30132820 is a wasteful number, since it uses less digits than its factorization.

30132820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506650 (or 1506648 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 30132820 is about 5489.3369362793. The cubic root of 30132820 is about 311.1811339929.

Adding to 30132820 its reverse (2823103), we get a palindrome (32955923).

The spelling of 30132820 in words is "thirty million, one hundred thirty-two thousand, eight hundred twenty".