13821198 has 8 divisors (see below), whose sum is σ = 27642408. Its totient is φ = 4607064.

The previous prime is 13821179. The next prime is 13821209. The reversal of 13821198 is 89112831.

13821198 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

13821198 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1151761 + ... + 1151772.

It is an arithmetic number, because the mean of its divisors is an integer number (3455301).

Almost surely, 2^13821198 is an apocalyptic number.

13821198 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13821198 is a wasteful number, since it uses less digits than its factorization.

13821198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303538.

The product of its digits is 3456, while the sum is 33.

The square root of 13821198 is about 3717.6871842585. The cubic root of 13821198 is about 239.9837836265.

The spelling of 13821198 in words is "thirteen million, eight hundred twenty-one thousand, one hundred ninety-eight".