159226820 has 24 divisors (see below), whose sum is σ = 345907800. Its totient is φ = 61494272.

The previous prime is 159226763. The next prime is 159226829. The reversal of 159226820 is 28622951.

It is a happy number.

159226820 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6061444 + 153165376 = 2462^2 + 12376^2 .

It is not an unprimeable number, because it can be changed into a prime (159226829) 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, 136685 + ... + 137844.

It is an arithmetic number, because the mean of its divisors is an integer number (14412825).

Almost surely, 2^159226820 is an apocalyptic number.

159226820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159226820 is an abundant number, since it is smaller than the sum of its proper divisors (186680980).

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

159226820 is a wasteful number, since it uses less digits than its factorization.

159226820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274567 (or 274565 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 159226820 is about 12618.5110056615. The cubic root of 159226820 is about 542.0076386772.

The spelling of 159226820 in words is "one hundred fifty-nine million, two hundred twenty-six thousand, eight hundred twenty".