159888420 has 72 divisors (see below), whose sum is σ = 510531840. Its totient is φ = 40392000.

The previous prime is 159888419. The next prime is 159888427. The reversal of 159888420 is 24888951.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (159888427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19956 + ... + 26795.

It is an arithmetic number, because the mean of its divisors is an integer number (7090720).

Almost surely, 2^159888420 is an apocalyptic number.

159888420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159888420 is an abundant number, since it is smaller than the sum of its proper divisors (350643420).

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

159888420 is a wasteful number, since it uses less digits than its factorization.

159888420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46785 (or 46780 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The square root of 159888420 is about 12644.6992846805. The cubic root of 159888420 is about 542.7572961729.

The spelling of 159888420 in words is "one hundred fifty-nine million, eight hundred eighty-eight thousand, four hundred twenty".