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28341500 = 2253115153
BaseRepresentation
bin110110000011…
…1010011111100
31222022220020012
41230013103330
524223412000
62451242352
7462620165
oct154072374
958286205
1028341500
1114aa8430
1295a93b8
135b44125
143a9a76c
15274c735
hex1b074fc

28341500 has 48 divisors (see below), whose sum is σ = 67538016. Its totient is φ = 10304000.

The previous prime is 28341493. The next prime is 28341503. The reversal of 28341500 is 514382.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28341503) 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, 2924 + ... + 8076.

It is an arithmetic number, because the mean of its divisors is an integer number (1407042).

Almost surely, 228341500 is an apocalyptic number.

28341500 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 28341500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33769008).

28341500 is an abundant number, since it is smaller than the sum of its proper divisors (39196516).

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

28341500 is a wasteful number, since it uses less digits than its factorization.

28341500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5183 (or 5171 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 28341500 is about 5323.6735437102. The cubic root of 28341500 is about 304.8884300335. Note that the first 3 decimals are identical.

Adding to 28341500 its reverse (514382), we get a palindrome (28855882).

It can be divided in two parts, 2834 and 1500, that added together give a palindrome (4334).

The spelling of 28341500 in words is "twenty-eight million, three hundred forty-one thousand, five hundred".

Divisors: 1 2 4 5 10 11 20 22 25 44 50 55 100 110 125 220 250 275 500 550 1100 1375 2750 5153 5500 10306 20612 25765 51530 56683 103060 113366 128825 226732 257650 283415 515300 566830 644125 1133660 1288250 1417075 2576500 2834150 5668300 7085375 14170750 28341500