13698128 has 10 divisors (see below), whose sum is σ = 26540154. Its totient is φ = 6849056.

The previous prime is 13698127. The next prime is 13698143. The reversal of 13698128 is 82189631.

It can be written as a sum of positive squares in only one way, i.e., 12902464 + 795664 = 3592^2 + 892^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13698091 and 13698100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13698127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428051 + ... + 428082.

Almost surely, 2^13698128 is an apocalyptic number.

It is an amenable number.

13698128 is a deficient number, since it is larger than the sum of its proper divisors (12842026).

13698128 is an equidigital number, since it uses as much as digits as its factorization.

13698128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856141 (or 856135 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The square root of 13698128 is about 3701.0982153950. The cubic root of 13698128 is about 239.2693519707.

The spelling of 13698128 in words is "thirteen million, six hundred ninety-eight thousand, one hundred twenty-eight".