28823000 has 128 divisors (see below), whose sum is σ = 74692800. Its totient is φ = 10368000.

The previous prime is 28822999. The next prime is 28823009. The reversal of 28823000 is 32882.

It is a super-3 number, since 3×28823000³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28823009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 702980 + ... + 703020.

Almost surely, 2^28823000 is an apocalyptic number.

28823000 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 28823000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37346400).

28823000 is an abundant number, since it is smaller than the sum of its proper divisors (45869800).

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

28823000 is a wasteful number, since it uses less digits than its factorization.

28823000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 28823000 is about 5368.7056168131. The cubic root of 28823000 is about 306.6053490091.

Adding to 28823000 its reverse (32882), we get a palindrome (28855882).

The spelling of 28823000 in words is "twenty-eight million, eight hundred twenty-three thousand".