13897800 has 144 divisors (see below), whose sum is σ = 53389440. Its totient is φ = 3173760.

The previous prime is 13897787. The next prime is 13897831. The reversal of 13897800 is 879831.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12049 + ... + 13151.

It is an arithmetic number, because the mean of its divisors is an integer number (370760).

Almost surely, 2^13897800 is an apocalyptic number.

13897800 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 13897800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26694720).

13897800 is an abundant number, since it is smaller than the sum of its proper divisors (39491640).

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

13897800 is a wasteful number, since it uses less digits than its factorization.

13897800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132 (or 1120 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 13897800 is about 3727.9753218067. The cubic root of 13897800 is about 240.4263255787.

The spelling of 13897800 in words is "thirteen million, eight hundred ninety-seven thousand, eight hundred".