143307840 has 112 divisors (see below), whose sum is σ = 490045248. Its totient is φ = 35272704.

The previous prime is 143307839. The next prime is 143307851. The reversal of 143307840 is 48703341.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 143307798 and 143307807.

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, 6739 + ... + 18221.

It is an arithmetic number, because the mean of its divisors is an integer number (4375404).

Almost surely, 2^143307840 is an apocalyptic number.

143307840 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 143307840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245022624).

143307840 is an abundant number, since it is smaller than the sum of its proper divisors (346737408).

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

143307840 is a wasteful number, since it uses less digits than its factorization.

143307840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11516 (or 11506 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 143307840 is about 11971.1252603922. The cubic root of 143307840 is about 523.3071276676.

The spelling of 143307840 in words is "one hundred forty-three million, three hundred seven thousand, eight hundred forty".