9013420728 has 96 divisors (see below), whose sum is σ = 26463659040. Its totient is φ = 2754950400.

The previous prime is 9013420727. The next prime is 9013420769. The reversal of 9013420728 is 8270243109.

9013420728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 9013420692 and 9013420701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9013420727) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 109450 + ... + 173222.

It is an arithmetic number, because the mean of its divisors is an integer number (275663115).

Almost surely, 2^9013420728 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 9013420728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13231829520).

9013420728 is an abundant number, since it is smaller than the sum of its proper divisors (17450238312).

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

9013420728 is a wasteful number, since it uses less digits than its factorization.

9013420728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63949 (or 63942 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 9013420728 is about 94939.0369026356. The cubic root of 9013420728 is about 2081.1172443309.

The spelling of 9013420728 in words is "nine billion, thirteen million, four hundred twenty thousand, seven hundred twenty-eight".