8143400 has 48 divisors (see below), whose sum is σ = 19939200. Its totient is φ = 3084480.

The previous prime is 8143351. The next prime is 8143427. The reversal of 8143400 is 43418.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2729 + ... + 4871.

It is an arithmetic number, because the mean of its divisors is an integer number (415400).

Almost surely, 2^8143400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8143400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9969600).

8143400 is an abundant number, since it is smaller than the sum of its proper divisors (11795800).

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

8143400 is a wasteful number, since it uses less digits than its factorization.

8143400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178 (or 2169 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 8143400 is about 2853.6643110219. The cubic root of 8143400 is about 201.1879301401.

Adding to 8143400 its reverse (43418), we get a palindrome (8186818).

The spelling of 8143400 in words is "eight million, one hundred forty-three thousand, four hundred".