28850400 has 108 divisors (see below), whose sum is σ = 101759112. Its totient is φ = 7691520.

The previous prime is 28850399. The next prime is 28850443. The reversal of 28850400 is 405882.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 5197 + ... + 9203.

It is an arithmetic number, because the mean of its divisors is an integer number (942214).

Almost surely, 2^28850400 is an apocalyptic number.

28850400 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 28850400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50879556).

28850400 is an abundant number, since it is smaller than the sum of its proper divisors (72908712).

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

28850400 is a wasteful number, since it uses less digits than its factorization.

28850400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4033 (or 4017 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 28850400 is about 5371.2568361604. The cubic root of 28850400 is about 306.7024742897.

The spelling of 28850400 in words is "twenty-eight million, eight hundred fifty thousand, four hundred".