16231328 has 24 divisors (see below), whose sum is σ = 33836292. Its totient is φ = 7638016.

The previous prime is 16231297. The next prime is 16231333. The reversal of 16231328 is 82313261.

It can be written as a sum of positive squares in 2 ways, for example, as 15904144 + 327184 = 3988^2 + 572^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16231297 and 16231306.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14375 + ... + 15462.

Almost surely, 2^16231328 is an apocalyptic number.

It is an amenable number.

16231328 is an abundant number, since it is smaller than the sum of its proper divisors (17604964).

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

16231328 is a wasteful number, since it uses less digits than its factorization.

16231328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29864 (or 29856 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 16231328 is about 4028.8122319115. The cubic root of 16231328 is about 253.1927998638.

Adding to 16231328 its reverse (82313261), we get a palindrome (98544589).

The spelling of 16231328 in words is "sixteen million, two hundred thirty-one thousand, three hundred twenty-eight".