13198428 has 36 divisors (see below), whose sum is σ = 33474168. Its totient is φ = 4384800.

The previous prime is 13198379. The next prime is 13198429. The reversal of 13198428 is 82489131.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 13198392 and 13198401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13198429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18478 + ... + 19178.

It is an arithmetic number, because the mean of its divisors is an integer number (929838).

Almost surely, 2^13198428 is an apocalyptic number.

13198428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13198428 is an abundant number, since it is smaller than the sum of its proper divisors (20275740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13198428 is a wasteful number, since it uses less digits than its factorization.

13198428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234 (or 1229 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 13198428 is about 3632.9640790957. The cubic root of 13198428 is about 236.3237680112.

The spelling of 13198428 in words is "thirteen million, one hundred ninety-eight thousand, four hundred twenty-eight".