13198444 has 18 divisors (see below), whose sum is σ = 26868660. Its totient is φ = 5656392.

The previous prime is 13198441. The next prime is 13198453. The reversal of 13198444 is 44489131.

It is a super-2 number, since 2×13198444² = 348397848042272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13198441) 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 5 ways as a sum of consecutive naturals, for example, 33474 + ... + 33865.

Almost surely, 2^13198444 is an apocalyptic number.

13198444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13198444 is an abundant number, since it is smaller than the sum of its proper divisors (13670216).

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

13198444 is a wasteful number, since it uses less digits than its factorization.

13198444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67357 (or 67348 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 13198444 is about 3632.9662811537. The cubic root of 13198444 is about 236.3238635068.

The spelling of 13198444 in words is "thirteen million, one hundred ninety-eight thousand, four hundred forty-four".