9807072 has 96 divisors (see below), whose sum is σ = 28957824. Its totient is φ = 2880000.

The previous prime is 9807043. The next prime is 9807073. The reversal of 9807072 is 2707089.

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

It is a super-2 number, since 2×9807072² = 192357322426368, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9807073) 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, 38947 + ... + 39197.

It is an arithmetic number, because the mean of its divisors is an integer number (301644).

Almost surely, 2^9807072 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 9807072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14478912).

9807072 is an abundant number, since it is smaller than the sum of its proper divisors (19150752).

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

9807072 is a wasteful number, since it uses less digits than its factorization.

9807072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 9807072 is about 3131.6244985630. The cubic root of 9807072 is about 214.0489595960.

The spelling of 9807072 in words is "nine million, eight hundred seven thousand, seventy-two".