28258300 has 108 divisors (see below), whose sum is σ = 73224480. Its totient is φ = 9434880.

The previous prime is 28258289. The next prime is 28258303. The reversal of 28258300 is 385282.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28258303) 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, 357661 + ... + 357739.

Almost surely, 2^28258300 is an apocalyptic number.

28258300 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 28258300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36612240).

28258300 is an abundant number, since it is smaller than the sum of its proper divisors (44966180).

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

28258300 is a wasteful number, since it uses less digits than its factorization.

28258300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 28258300 is about 5315.8536473458. The cubic root of 28258300 is about 304.5897916372.

The spelling of 28258300 in words is "twenty-eight million, two hundred fifty-eight thousand, three hundred".