Search a number
-
+
28901300 = 2252319323
BaseRepresentation
bin110111000111…
…1111110110100
32000101100010112
41232033332310
524344320200
62511242152
7500441231
oct156177664
960340115
1028901300
111534aa7a
129819358
135cabb7c
143ba4788
15280d535
hex1b8ffb4

28901300 has 36 divisors (see below), whose sum is σ = 64745856. Its totient is φ = 11186400.

The previous prime is 28901293. The next prime is 28901311. The reversal of 28901300 is 310982.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1562 + ... + 7761.

It is an arithmetic number, because the mean of its divisors is an integer number (1798496).

Almost surely, 228901300 is an apocalyptic number.

28901300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28901300 is an abundant number, since it is smaller than the sum of its proper divisors (35844556).

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

28901300 is a wasteful number, since it uses less digits than its factorization.

28901300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9368 (or 9361 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 28901300 is about 5375.9929315430. The cubic root of 28901300 is about 306.8827373496.

The spelling of 28901300 in words is "twenty-eight million, nine hundred one thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 31 50 62 100 124 155 310 620 775 1550 3100 9323 18646 37292 46615 93230 186460 233075 289013 466150 578026 932300 1156052 1445065 2890130 5780260 7225325 14450650 28901300