13889340 has 144 divisors (see below), whose sum is σ = 46418400. Its totient is φ = 3446784.

The previous prime is 13889327. The next prime is 13889353. The reversal of 13889340 is 4398831.

It is an interprime number because it is at equal distance from previous prime (13889327) and next prime (13889353).

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 = 13889295 and 13889304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 156016 + ... + 156104.

It is an arithmetic number, because the mean of its divisors is an integer number (322350).

Almost surely, 2^13889340 is an apocalyptic number.

13889340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13889340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23209200).

13889340 is an abundant number, since it is smaller than the sum of its proper divisors (32529060).

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

13889340 is a wasteful number, since it uses less digits than its factorization.

13889340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 13889340 is about 3726.8404849148. The cubic root of 13889340 is about 240.3775308156.

The spelling of 13889340 in words is "thirteen million, eight hundred eighty-nine thousand, three hundred forty".