28093000 has 64 divisors (see below), whose sum is σ = 70827120. Its totient is φ = 10368000.

The previous prime is 28092997. The next prime is 28093003. The reversal of 28093000 is 39082.

It is an interprime number because it is at equal distance from previous prime (28092997) and next prime (28093003).

It can be written as a sum of positive squares in 8 ways, for example, as 66564 + 28026436 = 258^2 + 5294^2 .

It is not an unprimeable number, because it can be changed into a prime (28093003) 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 15 ways as a sum of consecutive naturals, for example, 11920 + ... + 14080.

Almost surely, 2^28093000 is an apocalyptic number.

28093000 is a gapful number since it is divisible by the number (20) 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 28093000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35413560).

28093000 is an abundant number, since it is smaller than the sum of its proper divisors (42734120).

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

28093000 is a wasteful number, since it uses less digits than its factorization.

28093000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2195 (or 2181 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 28093000 is about 5300.2830113118. The cubic root of 28093000 is about 303.9947194374.

The spelling of 28093000 in words is "twenty-eight million, ninety-three thousand".