30432232144 has 80 divisors (see below), whose sum is σ = 62385257088. Its totient is φ = 14352408576.

The previous prime is 30432232141. The next prime is 30432232183. The reversal of 30432232144 is 44123223403.

It is a super-2 number, since 2×30432232144² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30432232141) 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, 10957284 + ... + 10960060.

Almost surely, 2^30432232144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30432232144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31192628544).

30432232144 is an abundant number, since it is smaller than the sum of its proper divisors (31953024944).

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

30432232144 is a wasteful number, since it uses less digits than its factorization.

30432232144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3212 (or 3206 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 30432232144 its reverse (44123223403), we get a palindrome (74555455547).

The spelling of 30432232144 in words is "thirty billion, four hundred thirty-two million, two hundred thirty-two thousand, one hundred forty-four".