143783640 has 768 divisors, whose sum is σ = 689472000. Its totient is φ = 26127360.

The previous prime is 143783623. The next prime is 143783663. The reversal of 143783640 is 46387341.

143783640 = 87³ + 88³ + ... + 158³.

143783640 is a `hidden beast` number, since 1 + 4 + 3 + 7 + 8 + 3 + 640 = 666.

143783640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 143783595 and 143783604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 7567551 + ... + 7567569.

It is an arithmetic number, because the mean of its divisors is an integer number (897750).

Almost surely, 2^143783640 is an apocalyptic number.

143783640 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 143783640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344736000).

143783640 is an abundant number, since it is smaller than the sum of its proper divisors (545688360).

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

143783640 is a wasteful number, since it uses less digits than its factorization.

143783640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 143783640 is about 11990.9816111943. The cubic root of 143783640 is about 523.8856363280.

The spelling of 143783640 in words is "one hundred forty-three million, seven hundred eighty-three thousand, six hundred forty".