30532220 has 12 divisors (see below), whose sum is σ = 64117704. Its totient is φ = 12212880.

The previous prime is 30532219. The next prime is 30532237. The reversal of 30532220 is 2223503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763286 + ... + 763325.

It is an arithmetic number, because the mean of its divisors is an integer number (5343142).

Almost surely, 2^30532220 is an apocalyptic number.

It is an amenable number.

30532220 is an abundant number, since it is smaller than the sum of its proper divisors (33585484).

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

30532220 is a wasteful number, since it uses less digits than its factorization.

30532220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526620 (or 1526618 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 30532220 is about 5525.5968003465. The cubic root of 30532220 is about 312.5499696093.

Adding to 30532220 its reverse (2223503), we get a palindrome (32755723).

The spelling of 30532220 in words is "thirty million, five hundred thirty-two thousand, two hundred twenty".