28797300 has 162 divisors, whose sum is σ = 105161238. Its totient is φ = 6572160.

The previous prime is 28797283. The next prime is 28797343. The reversal of 28797300 is 379782.

It can be written as a sum of positive squares in 3 ways, for example, as 345744 + 28451556 = 588^2 + 5334^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 43774 + ... + 44426.

Almost surely, 2^28797300 is an apocalyptic number.

28797300 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 28797300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52580619).

28797300 is an abundant number, since it is smaller than the sum of its proper divisors (76363938).

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

28797300 is a wasteful number, since it uses less digits than its factorization.

28797300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687 (or 670 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 28797300 is about 5366.3115824559. The cubic root of 28797300 is about 306.5141937902.

The spelling of 28797300 in words is "twenty-eight million, seven hundred ninety-seven thousand, three hundred".