13312028 has 6 divisors (see below), whose sum is σ = 23296056. Its totient is φ = 6656012.

The previous prime is 13312021. The next prime is 13312031. The reversal of 13312028 is 82021331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13312021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1664000 + ... + 1664007.

It is an arithmetic number, because the mean of its divisors is an integer number (3882676).

Almost surely, 2^13312028 is an apocalyptic number.

It is an amenable number.

13312028 is a deficient number, since it is larger than the sum of its proper divisors (9984028).

13312028 is a wasteful number, since it uses less digits than its factorization.

13312028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3328011 (or 3328009 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 13312028 is about 3648.5651974441. The cubic root of 13312028 is about 236.9998516381. Note that the first 3 decimals are identical.

Adding to 13312028 its reverse (82021331), we get a palindrome (95333359).

The spelling of 13312028 in words is "thirteen million, three hundred twelve thousand, twenty-eight".