16231228 has 24 divisors (see below), whose sum is σ = 31579520. Its totient is φ = 7248960.

The previous prime is 16231217. The next prime is 16231273. The reversal of 16231228 is 82213261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3423 + ... + 6646.

Almost surely, 2^16231228 is an apocalyptic number.

It is an amenable number.

16231228 is a deficient number, since it is larger than the sum of its proper divisors (15348292).

16231228 is a wasteful number, since it uses less digits than its factorization.

16231228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10117 (or 10115 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 16231228 is about 4028.7998212867. The cubic root of 16231228 is about 253.1922798954.

Adding to 16231228 its reverse (82213261), we get a palindrome (98444489).

The spelling of 16231228 in words is "sixteen million, two hundred thirty-one thousand, two hundred twenty-eight".