13128002 has 4 divisors (see below), whose sum is σ = 19692006. Its totient is φ = 6564000.

The previous prime is 13127999. The next prime is 13128013. The reversal of 13128002 is 20082131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20082131 = 181 ⋅110951.

It can be written as a sum of positive squares in only one way, i.e., 12967201 + 160801 = 3601^2 + 401^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3281999 + ... + 3282002.

Almost surely, 2^13128002 is an apocalyptic number.

13128002 is a deficient number, since it is larger than the sum of its proper divisors (6564004).

13128002 is an equidigital number, since it uses as much as digits as its factorization.

13128002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6564003.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 13128002 is about 3623.2584782210. The cubic root of 13128002 is about 235.9026817939.

The spelling of 13128002 in words is "thirteen million, one hundred twenty-eight thousand, two".