13987400 has 96 divisors (see below), whose sum is σ = 37914240. Its totient is φ = 4700160.

The previous prime is 13987397. The next prime is 13987403. The reversal of 13987400 is 478931.

13987400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13987397) and next prime (13987403).

It is not an unprimeable number, because it can be changed into a prime (13987403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135749 + ... + 135851.

It is an arithmetic number, because the mean of its divisors is an integer number (394940).

Almost surely, 2^13987400 is an apocalyptic number.

13987400 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 13987400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18957120).

13987400 is an abundant number, since it is smaller than the sum of its proper divisors (23926840).

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

13987400 is a wasteful number, since it uses less digits than its factorization.

13987400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 13987400 is about 3739.9732619365. The cubic root of 13987400 is about 240.9419004475.

The spelling of 13987400 in words is "thirteen million, nine hundred eighty-seven thousand, four hundred".