30023135440 has 80 divisors (see below), whose sum is σ = 72606352896. Its totient is φ = 11533017600.

The previous prime is 30023135419. The next prime is 30023135453. The reversal of 30023135440 is 4453132003.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278674 + ... + 371086.

Almost surely, 2^30023135440 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 30023135440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36303176448).

30023135440 is an abundant number, since it is smaller than the sum of its proper divisors (42583217456).

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

30023135440 is a wasteful number, since it uses less digits than its factorization.

30023135440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92588 (or 92582 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 30023135440 its reverse (4453132003), we get a palindrome (34476267443).

The spelling of 30023135440 in words is "thirty billion, twenty-three million, one hundred thirty-five thousand, four hundred forty".