13820382 has 28 divisors (see below), whose sum is σ = 31084920. Its totient is φ = 4606308.

The previous prime is 13820381. The next prime is 13820383. The reversal of 13820382 is 28302831.

It is an interprime number because it is at equal distance from previous prime (13820381) and next prime (13820383).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13820381) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 3282 + ... + 6197.

Almost surely, 2^13820382 is an apocalyptic number.

13820382 is an abundant number, since it is smaller than the sum of its proper divisors (17264538).

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

13820382 is an frugal number, since it uses more digits than its factorization.

13820382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9499 (or 9484 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 13820382 is about 3717.5774369877. The cubic root of 13820382 is about 239.9790606732.

The spelling of 13820382 in words is "thirteen million, eight hundred twenty thousand, three hundred eighty-two".