30021371232 has 96 divisors (see below), whose sum is σ = 81220487040. Its totient is φ = 9703895040.

The previous prime is 30021371201. The next prime is 30021371243. The reversal of 30021371232 is 23217312003.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 547632 + ... + 599952.

It is an arithmetic number, because the mean of its divisors is an integer number (846046740).

Almost surely, 2^30021371232 is an apocalyptic number.

30021371232 is a gapful number since it is divisible by the number (32) 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 30021371232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40610243520).

30021371232 is an abundant number, since it is smaller than the sum of its proper divisors (51199115808).

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

30021371232 is a wasteful number, since it uses less digits than its factorization.

30021371232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52516 (or 52508 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

Adding to 30021371232 its reverse (23217312003), we get a palindrome (53238683235).

The spelling of 30021371232 in words is "thirty billion, twenty-one million, three hundred seventy-one thousand, two hundred thirty-two".