30142224 has 120 divisors (see below), whose sum is σ = 102136320. Its totient is φ = 8100864.

The previous prime is 30142201. The next prime is 30142237. The reversal of 30142224 is 42224103.

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

It is a junction number, because it is equal to n+sod(n) for n = 30142197 and 30142206.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16257 + ... + 18015.

It is an arithmetic number, because the mean of its divisors is an integer number (851136).

Almost surely, 2^30142224 is an apocalyptic number.

30142224 is a gapful number since it is divisible by the number (34) 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 30142224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51068160).

30142224 is an abundant number, since it is smaller than the sum of its proper divisors (71994096).

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

30142224 is a wasteful number, since it uses less digits than its factorization.

30142224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797 (or 1788 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 30142224 is about 5490.1934392151. The cubic root of 30142224 is about 311.2135022767.

Adding to 30142224 its reverse (42224103), we get a palindrome (72366327).

The spelling of 30142224 in words is "thirty million, one hundred forty-two thousand, two hundred twenty-four".