28473300 has 108 divisors (see below), whose sum is σ = 94548636. Its totient is φ = 7142400.

The previous prime is 28473281. The next prime is 28473301. The reversal of 28473300 is 337482.

It can be written as a sum of positive squares in 6 ways, for example, as 3732624 + 24740676 = 1932^2 + 4974^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28473301) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 14370 + ... + 16230.

Almost surely, 2^28473300 is an apocalyptic number.

28473300 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 28473300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47274318).

28473300 is an abundant number, since it is smaller than the sum of its proper divisors (66075336).

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

28473300 is a wasteful number, since it uses less digits than its factorization.

28473300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898 (or 1888 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 28473300 is about 5336.0378559377. The cubic root of 28473300 is about 305.3603194792.

The spelling of 28473300 in words is "twenty-eight million, four hundred seventy-three thousand, three hundred".