28903168 has 54 divisors (see below), whose sum is σ = 66458616. Its totient is φ = 12289536.

The previous prime is 28903163. The next prime is 28903201. The reversal of 28903168 is 86130982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28903163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 227521 + ... + 227647.

Almost surely, 2^28903168 is an apocalyptic number.

28903168 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 28903168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33229308).

28903168 is an abundant number, since it is smaller than the sum of its proper divisors (37555448).

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

28903168 is an frugal number, since it uses more digits than its factorization.

28903168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 28903168 is about 5376.1666640832. The cubic root of 28903168 is about 306.8893488700.

The spelling of 28903168 in words is "twenty-eight million, nine hundred three thousand, one hundred sixty-eight".