9731628 has 18 divisors (see below), whose sum is σ = 24599484. Its totient is φ = 3243864.

The previous prime is 9731587. The next prime is 9731663. The reversal of 9731628 is 8261379.

9731628 is nontrivially palindromic in base 8.

9731628 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 270323 = 9731628 / (9 + 7 + 3 + 1 + 6 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 9731592 and 9731601.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 135126 + ... + 135197.

It is an arithmetic number, because the mean of its divisors is an integer number (1366638).

Almost surely, 2^9731628 is an apocalyptic number.

It is an amenable number.

9731628 is an abundant number, since it is smaller than the sum of its proper divisors (14867856).

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

9731628 is a wasteful number, since it uses less digits than its factorization.

9731628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270333 (or 270328 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 9731628 is about 3119.5557376011. Note that the first 3 decimals coincide. The cubic root of 9731628 is about 213.4986663219.

It can be divided in two parts, 97316 and 28, that added together give a square (97344 = 312²).

The spelling of 9731628 in words is "nine million, seven hundred thirty-one thousand, six hundred twenty-eight".