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28300195 = 5721110501
BaseRepresentation
bin110101111110…
…1001110100011
31222020210120101
41223331032203
524221101240
62450323231
7462355600
oct153751643
958223511
1028300195
1114a7a3a0
129589517
135b2b3a1
143a896a7
15274039a
hex1afd3a3

28300195 has 24 divisors (see below), whose sum is σ = 43100208. Its totient is φ = 17640000.

The previous prime is 28300159. The next prime is 28300213. The reversal of 28300195 is 59100382.

It is not a de Polignac number, because 28300195 - 211 = 28298147 is a prime.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2556 + ... + 7945.

It is an arithmetic number, because the mean of its divisors is an integer number (1795842).

Almost surely, 228300195 is an apocalyptic number.

28300195 is a deficient number, since it is larger than the sum of its proper divisors (14800013).

28300195 is a wasteful number, since it uses less digits than its factorization.

28300195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10531 (or 10524 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 28300195 is about 5319.7927591214. The cubic root of 28300195 is about 304.7402428703.

The spelling of 28300195 in words is "twenty-eight million, three hundred thousand, one hundred ninety-five".

Divisors: 1 5 7 11 35 49 55 77 245 385 539 2695 10501 52505 73507 115511 367535 514549 577555 808577 2572745 4042885 5660039 28300195