30213220 has 24 divisors (see below), whose sum is σ = 65495808. Its totient is φ = 11695200.

The previous prime is 30213217. The next prime is 30213247. The reversal of 30213220 is 2231203.

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 30213220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23746 + ... + 24985.

It is an arithmetic number, because the mean of its divisors is an integer number (2728992).

Almost surely, 2^30213220 is an apocalyptic number.

It is an amenable number.

30213220 is an abundant number, since it is smaller than the sum of its proper divisors (35282588).

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

30213220 is a wasteful number, since it uses less digits than its factorization.

30213220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48771 (or 48769 counting only the distinct ones).

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

The square root of 30213220 is about 5496.6553466631. The cubic root of 30213220 is about 311.4576513621.

Adding to 30213220 its reverse (2231203), we get a palindrome (32444423).

It can be divided in two parts, 3021 and 3220, that added together give a square (6241 = 79²).

The spelling of 30213220 in words is "thirty million, two hundred thirteen thousand, two hundred twenty".