13143400 has 24 divisors (see below), whose sum is σ = 30558870. Its totient is φ = 5257280.

The previous prime is 13143391. The next prime is 13143407. The reversal of 13143400 is 434131.

It can be written as a sum of positive squares in 3 ways, for example, as 8538084 + 4605316 = 2922^2 + 2146^2 .

It is not an unprimeable number, because it can be changed into a prime (13143407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32659 + ... + 33058.

Almost surely, 2^13143400 is an apocalyptic number.

13143400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13143400 is an abundant number, since it is smaller than the sum of its proper divisors (17415470).

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

13143400 is a wasteful number, since it uses less digits than its factorization.

13143400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65733 (or 65724 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 13143400 is about 3625.3827384154. The cubic root of 13143400 is about 235.9948768399.

Adding to 13143400 its reverse (434131), we get a palindrome (13577531).

The spelling of 13143400 in words is "thirteen million, one hundred forty-three thousand, four hundred".