10143840 has 96 divisors (see below), whose sum is σ = 36529920. Its totient is φ = 2317824.

The previous prime is 10143839. The next prime is 10143857. The reversal of 10143840 is 4834101.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1851 + ... + 4869.

It is an arithmetic number, because the mean of its divisors is an integer number (380520).

Almost surely, 2^10143840 is an apocalyptic number.

10143840 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 10143840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18264960).

10143840 is an abundant number, since it is smaller than the sum of its proper divisors (26386080).

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

10143840 is a wasteful number, since it uses less digits than its factorization.

10143840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044 (or 3036 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 10143840 is about 3184.9395598661. The cubic root of 10143840 is about 216.4715350324.

Adding to 10143840 its reverse (4834101), we get a palindrome (14977941).

The spelling of 10143840 in words is "ten million, one hundred forty-three thousand, eight hundred forty".