28495800 has 120 divisors (see below), whose sum is σ = 99026400. Its totient is φ = 7594560.

The previous prime is 28495783. The next prime is 28495807. The reversal of 28495800 is 859482.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28495807) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 15321 + ... + 17079.

It is an arithmetic number, because the mean of its divisors is an integer number (825220).

Almost surely, 2^28495800 is an apocalyptic number.

28495800 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 28495800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49513200).

28495800 is an abundant number, since it is smaller than the sum of its proper divisors (70530600).

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

28495800 is a wasteful number, since it uses less digits than its factorization.

28495800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1787 (or 1769 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 28495800 is about 5338.1457454813. The cubic root of 28495800 is about 305.4407316341.

It can be divided in two parts, 2849 and 5800, that added together give a square (8649 = 93²).

The spelling of 28495800 in words is "twenty-eight million, four hundred ninety-five thousand, eight hundred".