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28841300 = 2252288413
BaseRepresentation
bin110111000000…
…1010101010100
32000021021211022
41232001111110
524340410200
62510100312
7500101265
oct156012524
960237738
1028841300
1115309994
1297aa698
135c8a777
143b8a96c
1527ea885
hex1b81554

28841300 has 18 divisors (see below), whose sum is σ = 62585838. Its totient is φ = 11536480.

The previous prime is 28841279. The next prime is 28841303. The reversal of 28841300 is 314882.

It can be written as a sum of positive squares in 3 ways, for example, as 4674244 + 24167056 = 2162^2 + 4916^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28841300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28841303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 144107 + ... + 144306.

It is an arithmetic number, because the mean of its divisors is an integer number (3476991).

Almost surely, 228841300 is an apocalyptic number.

28841300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28841300 is an abundant number, since it is smaller than the sum of its proper divisors (33744538).

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

28841300 is a wasteful number, since it uses less digits than its factorization.

28841300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288427 (or 288420 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 28841300 is about 5370.4096678000. The cubic root of 28841300 is about 306.6702241763.

The spelling of 28841300 in words is "twenty-eight million, eight hundred forty-one thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 100 288413 576826 1153652 1442065 2884130 5768260 7210325 14420650 28841300