20159328 has 96 divisors (see below), whose sum is σ = 61205760. Its totient is φ = 5690880.

The previous prime is 20159327. The next prime is 20159329. The reversal of 20159328 is 82395102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20159327) and next prime (20159329).

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20159295 and 20159304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20159327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87918 + ... + 88146.

It is an arithmetic number, because the mean of its divisors is an integer number (637560).

Almost surely, 2^20159328 is an apocalyptic number.

20159328 is a gapful number since it is divisible by the number (28) 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 20159328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30602880).

20159328 is an abundant number, since it is smaller than the sum of its proper divisors (41046432).

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

20159328 is a wasteful number, since it uses less digits than its factorization.

20159328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 20159328 is about 4489.9140303574. The cubic root of 20159328 is about 272.1606605636.

The spelling of 20159328 in words is "twenty million, one hundred fifty-nine thousand, three hundred twenty-eight".