159620820 has 48 divisors (see below), whose sum is σ = 473231808. Its totient is φ = 40061440.

The previous prime is 159620809. The next prime is 159620863. The reversal of 159620820 is 28026951.

159620820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77226 + ... + 79265.

It is an arithmetic number, because the mean of its divisors is an integer number (9858996).

Almost surely, 2^159620820 is an apocalyptic number.

159620820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159620820 is an abundant number, since it is smaller than the sum of its proper divisors (313610988).

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

159620820 is a wasteful number, since it uses less digits than its factorization.

159620820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156520 (or 156518 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 159620820 is about 12634.1133444338. The cubic root of 159620820 is about 542.4543287311.

The spelling of 159620820 in words is "one hundred fifty-nine million, six hundred twenty thousand, eight hundred twenty".