30132220 has 12 divisors (see below), whose sum is σ = 63277704. Its totient is φ = 12052880.

The previous prime is 30132209. The next prime is 30132251. The reversal of 30132220 is 2223103.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30132220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753286 + ... + 753325.

It is an arithmetic number, because the mean of its divisors is an integer number (5273142).

Almost surely, 2^30132220 is an apocalyptic number.

It is an amenable number.

30132220 is an abundant number, since it is smaller than the sum of its proper divisors (33145484).

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

30132220 is a wasteful number, since it uses less digits than its factorization.

30132220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506620 (or 1506618 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 30132220 is about 5489.2822845979. The cubic root of 30132220 is about 311.1790685825.

Adding to 30132220 its reverse (2223103), we get a palindrome (32355323).

The spelling of 30132220 in words is "thirty million, one hundred thirty-two thousand, two hundred twenty".