159802420 has 48 divisors (see below), whose sum is σ = 350351568. Its totient is φ = 61168640.

The previous prime is 159802411. The next prime is 159802421. The reversal of 159802420 is 24208951.

It can be written as a sum of positive squares in 8 ways, for example, as 992016 + 158810404 = 996^2 + 12602^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159802421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41622 + ... + 45298.

It is an arithmetic number, because the mean of its divisors is an integer number (7298991).

Almost surely, 2^159802420 is an apocalyptic number.

159802420 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 159802420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175175784).

159802420 is an abundant number, since it is smaller than the sum of its proper divisors (190549148).

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

159802420 is a wasteful number, since it uses less digits than its factorization.

159802420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3780 (or 3778 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 159802420 is about 12641.2981928281. The cubic root of 159802420 is about 542.6599668420.

The spelling of 159802420 in words is "one hundred fifty-nine million, eight hundred two thousand, four hundred twenty".