30223172 has 12 divisors (see below), whose sum is σ = 60446400. Its totient is φ = 12952776.

The previous prime is 30223147. The next prime is 30223177. The reversal of 30223172 is 27132203.

30223172 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (30223177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539672 + ... + 539727.

It is an arithmetic number, because the mean of its divisors is an integer number (5037200).

Almost surely, 2^30223172 is an apocalyptic number.

It is an amenable number.

30223172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30223172 is a wasteful number, since it uses less digits than its factorization.

30223172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079410 (or 1079408 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 30223172 is about 5497.5605499167. The cubic root of 30223172 is about 311.4918448518.

Adding to 30223172 its reverse (27132203), we get a palindrome (57355375).

The spelling of 30223172 in words is "thirty million, two hundred twenty-three thousand, one hundred seventy-two".