159780 has 24 divisors (see below), whose sum is σ = 447552. Its totient is φ = 42592.

The previous prime is 159779. The next prime is 159787. The reversal of 159780 is 87951.

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

It is a plaindrome in base 7.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 159780.

It is not an unprimeable number, because it can be changed into a prime (159787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1272 + ... + 1391.

It is an arithmetic number, because the mean of its divisors is an integer number (18648).

2¹⁵⁹⁷⁸⁰ is an apocalyptic number.

159780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159780 is an abundant number, since it is smaller than the sum of its proper divisors (287772).

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

159780 is a wasteful number, since it uses less digits than its factorization.

159780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2675 (or 2673 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 159780 is about 399.7249054037. The cubic root of 159780 is about 54.2634587574.

It can be divided in two parts, 159 and 780, that added together give a palindrome (939).

The spelling of 159780 in words is "one hundred fifty-nine thousand, seven hundred eighty".