30225312 has 216 divisors, whose sum is σ = 100717344. Its totient is φ = 8895744.

The previous prime is 30225311. The next prime is 30225319. The reversal of 30225312 is 21352203.

It is a tau number, because it is divible by the number of its divisors (216).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30225311) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1314133 + ... + 1314155.

It is an arithmetic number, because the mean of its divisors is an integer number (466284).

Almost surely, 2^30225312 is an apocalyptic number.

30225312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30225312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50358672).

30225312 is an abundant number, since it is smaller than the sum of its proper divisors (70492032).

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

30225312 is a wasteful number, since it uses less digits than its factorization.

30225312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 30225312 is about 5497.7551782523. The cubic root of 30225312 is about 311.4991965709.

Adding to 30225312 its reverse (21352203), we get a palindrome (51577515).

The spelling of 30225312 in words is "thirty million, two hundred twenty-five thousand, three hundred twelve".