9972528 has 40 divisors (see below), whose sum is σ = 25877808. Its totient is φ = 3309312.

The previous prime is 9972527. The next prime is 9972551. The reversal of 9972528 is 8252799.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 9972528.

It is not an unprimeable number, because it can be changed into a prime (9972527) 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, 17626 + ... + 18182.

Almost surely, 2^9972528 is an apocalyptic number.

It is an amenable number.

9972528 is an abundant number, since it is smaller than the sum of its proper divisors (15905280).

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

9972528 is a wasteful number, since it uses less digits than its factorization.

9972528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941 (or 935 counting only the distinct ones).

The product of its digits is 90720, while the sum is 42.

The square root of 9972528 is about 3157.9309682132. The cubic root of 9972528 is about 215.2459992970.

It can be divided in two parts, 99 and 72528, that added together give a palindrome (72627).

The spelling of 9972528 in words is "nine million, nine hundred seventy-two thousand, five hundred twenty-eight".