30223144 has 64 divisors (see below), whose sum is σ = 69984000. Its totient is φ = 11940864.

The previous prime is 30223111. The next prime is 30223147. The reversal of 30223144 is 44132203.

It is not an unprimeable number, because it can be changed into a prime (30223147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50157 + ... + 50755.

It is an arithmetic number, because the mean of its divisors is an integer number (1093500).

Almost surely, 2^30223144 is an apocalyptic number.

30223144 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 30223144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34992000).

30223144 is an abundant number, since it is smaller than the sum of its proper divisors (39760856).

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

30223144 is a wasteful number, since it uses less digits than its factorization.

30223144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 30223144 is about 5497.5580033320. The cubic root of 30223144 is about 311.4917486587.

Adding to 30223144 its reverse (44132203), we get a palindrome (74355347).

The spelling of 30223144 in words is "thirty million, two hundred twenty-three thousand, one hundred forty-four".