28898100 has 288 divisors, whose sum is σ = 116659200. Its totient is φ = 5961600.

The previous prime is 28898099. The next prime is 28898117. The reversal of 28898100 is 189882.

It is a super-2 number, since 2×28898100² = 1670200367220000, which contains 22 as substring.

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 95 ways as a sum of consecutive naturals, for example, 207831 + ... + 207969.

Almost surely, 2^28898100 is an apocalyptic number.

28898100 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 28898100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58329600).

28898100 is an abundant number, since it is smaller than the sum of its proper divisors (87761100).

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

28898100 is a wasteful number, since it uses less digits than its factorization.

28898100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 28898100 is about 5375.6953038654. The cubic root of 28898100 is about 306.8714107425.

The spelling of 28898100 in words is "twenty-eight million, eight hundred ninety-eight thousand, one hundred".