28058500 has 48 divisors (see below), whose sum is σ = 64904112. Its totient is φ = 10560000.

The previous prime is 28058477. The next prime is 28058501. The reversal of 28058500 is 585082.

It can be written as a sum of positive squares in 8 ways, for example, as 9326916 + 18731584 = 3054^2 + 4328^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28058501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6850 + ... + 10150.

It is an arithmetic number, because the mean of its divisors is an integer number (1352169).

Almost surely, 2^28058500 is an apocalyptic number.

28058500 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 28058500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32452056).

28058500 is an abundant number, since it is smaller than the sum of its proper divisors (36845612).

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

28058500 is a wasteful number, since it uses less digits than its factorization.

28058500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337 (or 3325 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 28058500 is about 5297.0274683071. The cubic root of 28058500 is about 303.8702268118.

The spelling of 28058500 in words is "twenty-eight million, fifty-eight thousand, five hundred".