28159488 has 200 divisors, whose sum is σ = 97045872. Its totient is φ = 7962624.

The previous prime is 28159477. The next prime is 28159489. The reversal of 28159488 is 88495182.

It is a happy number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28159489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 290256 + ... + 290352.

Almost surely, 2^28159488 is an apocalyptic number.

28159488 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 28159488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48522936).

28159488 is an abundant number, since it is smaller than the sum of its proper divisors (68886384).

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

28159488 is an frugal number, since it uses more digits than its factorization.

28159488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 109 counting only the distinct ones).

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

The square root of 28159488 is about 5306.5514225342. The cubic root of 28159488 is about 304.2343529940.

The spelling of 28159488 in words is "twenty-eight million, one hundred fifty-nine thousand, four hundred eighty-eight".