13128401 has 8 divisors (see below), whose sum is σ = 15423744. Its totient is φ = 11016720.

The previous prime is 13128347. The next prime is 13128413. The reversal of 13128401 is 10482131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13128401 - 2⁶ = 13128337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13128431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45761 + ... + 46046.

It is an arithmetic number, because the mean of its divisors is an integer number (1927968).

Almost surely, 2^13128401 is an apocalyptic number.

13128401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13128401 is a deficient number, since it is larger than the sum of its proper divisors (2295343).

13128401 is a wasteful number, since it uses less digits than its factorization.

13128401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91831.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 13128401 is about 3623.3135387377. The cubic root of 13128401 is about 235.9050717035.

The spelling of 13128401 in words is "thirteen million, one hundred twenty-eight thousand, four hundred one".