30225216 has 112 divisors (see below), whose sum is σ = 93699584. Its totient is φ = 8418816.

The previous prime is 30225199. The next prime is 30225227. The reversal of 30225216 is 61252203.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 30225192 and 30225201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57531 + ... + 58053.

Almost surely, 2^30225216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30225216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46849792).

30225216 is an abundant number, since it is smaller than the sum of its proper divisors (63474368).

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

30225216 is a wasteful number, since it uses less digits than its factorization.

30225216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588 (or 578 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 30225216 is about 5497.7464474092. The cubic root of 30225216 is about 311.4988667816.

Adding to 30225216 its reverse (61252203), we get a palindrome (91477419).

The spelling of 30225216 in words is "thirty million, two hundred twenty-five thousand, two hundred sixteen".