9728013 has 8 divisors (see below), whose sum is σ = 13246848. Its totient is φ = 6347264.

The previous prime is 9728009. The next prime is 9728023. The reversal of 9728013 is 3108279.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9728013 - 2² = 9728009 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9728023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34356 + ... + 34637.

It is an arithmetic number, because the mean of its divisors is an integer number (1655856).

Almost surely, 2^9728013 is an apocalyptic number.

It is an amenable number.

9728013 is a deficient number, since it is larger than the sum of its proper divisors (3518835).

9728013 is a wasteful number, since it uses less digits than its factorization.

9728013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69043.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 9728013 is about 3118.9762743567. The cubic root of 9728013 is about 213.4722269888.

The spelling of 9728013 in words is "nine million, seven hundred twenty-eight thousand, thirteen".