30222320 has 20 divisors (see below), whose sum is σ = 70267080. Its totient is φ = 12088896.

The previous prime is 30222307. The next prime is 30222373. The reversal of 30222320 is 2322203.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 30222295 and 30222304.

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, 188810 + ... + 188969.

It is an arithmetic number, because the mean of its divisors is an integer number (3513354).

Almost surely, 2^30222320 is an apocalyptic number.

It is an amenable number.

30222320 is an abundant number, since it is smaller than the sum of its proper divisors (40044760).

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

30222320 is a wasteful number, since it uses less digits than its factorization.

30222320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377792 (or 377786 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 30222320 is about 5497.4830604559. The cubic root of 30222320 is about 311.4889178090.

Adding to 30222320 its reverse (2322203), we get a palindrome (32544523).

It can be divided in two parts, 302 and 22320, that added together give a palindrome (22622).

The spelling of 30222320 in words is "thirty million, two hundred twenty-two thousand, three hundred twenty".