16159220 has 72 divisors (see below), whose sum is σ = 43092000. Its totient is φ = 5033280.

The previous prime is 16159217. The next prime is 16159237. The reversal of 16159220 is 2295161.

It is a super-2 number, since 2×16159220² = 522240782016800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16159220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10031 + ... + 11529.

It is an arithmetic number, because the mean of its divisors is an integer number (598500).

Almost surely, 2^16159220 is an apocalyptic number.

16159220 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 16159220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21546000).

16159220 is an abundant number, since it is smaller than the sum of its proper divisors (26932780).

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

16159220 is a wasteful number, since it uses less digits than its factorization.

16159220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533 (or 1524 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 16159220 is about 4019.8532311516. The cubic root of 16159220 is about 252.8173052366.

The spelling of 16159220 in words is "sixteen million, one hundred fifty-nine thousand, two hundred twenty".