13143750 has 48 divisors (see below), whose sum is σ = 32904144. Its totient is φ = 3500000.

The previous prime is 13143749. The next prime is 13143761. The reversal of 13143750 is 5734131.

It is a zygodrome in base 5.

It is a self number, because there is not a number n which added to its sum of digits gives 13143750.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 18400 + ... + 19100.

It is an arithmetic number, because the mean of its divisors is an integer number (685503).

Almost surely, 2^13143750 is an apocalyptic number.

13143750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13143750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16452072).

13143750 is an abundant number, since it is smaller than the sum of its proper divisors (19760394).

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

13143750 is an frugal number, since it uses more digits than its factorization.

13143750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731 (or 711 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 13143750 is about 3625.4310088595. The cubic root of 13143750 is about 235.9969716168.

Adding to 13143750 its reverse (5734131), we get a palindrome (18877881).

The spelling of 13143750 in words is "thirteen million, one hundred forty-three thousand, seven hundred fifty".