13820398 has 8 divisors (see below), whose sum is σ = 20776392. Its totient is φ = 6894936.

The previous prime is 13820393. The next prime is 13820399. The reversal of 13820398 is 89302831.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13820393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6465 + ... + 8332.

It is an arithmetic number, because the mean of its divisors is an integer number (2597049).

Almost surely, 2^13820398 is an apocalyptic number.

13820398 is a deficient number, since it is larger than the sum of its proper divisors (6955994).

13820398 is a wasteful number, since it uses less digits than its factorization.

13820398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15266.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 13820398 is about 3717.5795889261. The cubic root of 13820398 is about 239.9791532819.

The spelling of 13820398 in words is "thirteen million, eight hundred twenty thousand, three hundred ninety-eight".