13897380 has 144 divisors (see below), whose sum is σ = 47113920. Its totient is φ = 3048192.

The previous prime is 13897369. The next prime is 13897421. The reversal of 13897380 is 8379831.

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, 85179 + ... + 85341.

It is an arithmetic number, because the mean of its divisors is an integer number (327180).

Almost surely, 2^13897380 is an apocalyptic number.

13897380 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 13897380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23556960).

13897380 is an abundant number, since it is smaller than the sum of its proper divisors (33216540).

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

13897380 is a wasteful number, since it uses less digits than its factorization.

13897380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 13897380 is about 3727.9189905361. The cubic root of 13897380 is about 240.4239036108.

The spelling of 13897380 in words is "thirteen million, eight hundred ninety-seven thousand, three hundred eighty".