9973428 has 24 divisors (see below), whose sum is σ = 23322432. Its totient is φ = 3317184.

The previous prime is 9973417. The next prime is 9973489. The reversal of 9973428 is 8243799.

It is a d-powerful number, because it can be written as 9 + 9⁶ + 7⁸ + 3¹² + 4¹⁰ + 2²¹ + 8 .

It is a self number, because there is not a number n which added to its sum of digits gives 9973428.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10176 + ... + 11112.

It is an arithmetic number, because the mean of its divisors is an integer number (971768).

Almost surely, 2^9973428 is an apocalyptic number.

It is an amenable number.

9973428 is an abundant number, since it is smaller than the sum of its proper divisors (13349004).

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

9973428 is a wasteful number, since it uses less digits than its factorization.

9973428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831 (or 1829 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 9973428 is about 3158.0734633634. The cubic root of 9973428 is about 215.2524742708.

It can be divided in two parts, 9973 and 428, that added together give a palindrome (10401).

The spelling of 9973428 in words is "nine million, nine hundred seventy-three thousand, four hundred twenty-eight".