13073128 has 8 divisors (see below), whose sum is σ = 24512130. Its totient is φ = 6536560.

The previous prime is 13073063. The next prime is 13073129. The reversal of 13073128 is 82137031.

It can be written as a sum of positive squares in only one way, i.e., 10876804 + 2196324 = 3298^2 + 1482^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (13073129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 817063 + ... + 817078.

Almost surely, 2^13073128 is an apocalyptic number.

It is an amenable number.

13073128 is a deficient number, since it is larger than the sum of its proper divisors (11439002).

13073128 is a wasteful number, since it uses less digits than its factorization.

13073128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634147 (or 1634143 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 13073128 is about 3615.6780830157. The cubic root of 13073128 is about 235.5735379782.

The spelling of 13073128 in words is "thirteen million, seventy-three thousand, one hundred twenty-eight".