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28858095 = 3257172317
BaseRepresentation
bin110111000010…
…1011011101111
32000022010212100
41232011123233
524341424340
62510310143
7500201250
oct156053357
960263770
1028858095
1115320572
1297b8353
135c952c6
143b92b27
152800830
hex1b856ef

28858095 has 72 divisors (see below), whose sum is σ = 60918624. Its totient is φ = 12377088.

The previous prime is 28858087. The next prime is 28858111. The reversal of 28858095 is 59085882.

It is not a de Polignac number, because 28858095 - 23 = 28858087 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 28858095.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 90877 + ... + 91193.

It is an arithmetic number, because the mean of its divisors is an integer number (846092).

Almost surely, 228858095 is an apocalyptic number.

28858095 is an abundant number, since it is smaller than the sum of its proper divisors (32060529).

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

28858095 is a wasteful number, since it uses less digits than its factorization.

28858095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The square root of 28858095 is about 5371.9731011985. The cubic root of 28858095 is about 306.7297398359.

The spelling of 28858095 in words is "twenty-eight million, eight hundred fifty-eight thousand, ninety-five".

Divisors: 1 3 5 7 9 15 17 21 35 45 51 63 85 105 119 153 255 289 315 317 357 595 765 867 951 1071 1445 1585 1785 2023 2219 2601 2853 4335 4755 5355 5389 6069 6657 10115 11095 13005 14265 16167 18207 19971 26945 30345 33285 37723 48501 80835 91035 91613 99855 113169 188615 242505 274839 339507 458065 565845 641291 824517 1374195 1697535 1923873 3206455 4122585 5771619 9619365 28858095