143685780 has 96 divisors (see below), whose sum is σ = 461685504. Its totient is φ = 32707584.

The previous prime is 143685767. The next prime is 143685781. The reversal of 143685780 is 87586341.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143685781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130914 + ... + 132006.

It is an arithmetic number, because the mean of its divisors is an integer number (4809224).

Almost surely, 2^143685780 is an apocalyptic number.

143685780 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 143685780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230842752).

143685780 is an abundant number, since it is smaller than the sum of its proper divisors (317999724).

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

143685780 is a wasteful number, since it uses less digits than its factorization.

143685780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425 (or 1423 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 143685780 is about 11986.9003499654. The cubic root of 143685780 is about 523.7667561278.

The spelling of 143685780 in words is "one hundred forty-three million, six hundred eighty-five thousand, seven hundred eighty".