13928400 has 180 divisors, whose sum is σ = 49922028. Its totient is φ = 3594240.

The previous prime is 13928399. The next prime is 13928407. The reversal of 13928400 is 482931.

It can be written as a sum of positive squares in 6 ways, for example, as 576 + 13927824 = 24^2 + 3732^2 .

It is a tau number, because it is divible by the number of its divisors (180).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13928407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 190764 + ... + 190836.

Almost surely, 2^13928400 is an apocalyptic number.

13928400 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 13928400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24961014).

13928400 is an abundant number, since it is smaller than the sum of its proper divisors (35993628).

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

13928400 is a wasteful number, since it uses less digits than its factorization.

13928400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 13928400 is about 3732.0771696202. The cubic root of 13928400 is about 240.6026521102.

The spelling of 13928400 in words is "thirteen million, nine hundred twenty-eight thousand, four hundred".