30181224 has 32 divisors (see below), whose sum is σ = 76206240. Its totient is φ = 9960000.

The previous prime is 30181223. The next prime is 30181241. The reversal of 30181224 is 42218103.

It is a self number, because there is not a number n which added to its sum of digits gives 30181224.

It is not an unprimeable number, because it can be changed into a prime (30181223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3802 + ... + 8649.

It is an arithmetic number, because the mean of its divisors is an integer number (2381445).

Almost surely, 2^30181224 is an apocalyptic number.

It is an amenable number.

30181224 is an abundant number, since it is smaller than the sum of its proper divisors (46025016).

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

30181224 is a wasteful number, since it uses less digits than its factorization.

30181224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12561 (or 12557 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 30181224 is about 5493.7440784951. The cubic root of 30181224 is about 311.3476672901.

Adding to 30181224 its reverse (42218103), we get a palindrome (72399327).

The spelling of 30181224 in words is "thirty million, one hundred eighty-one thousand, two hundred twenty-four".