Search a number
-
+
28590485 = 5711243157
BaseRepresentation
bin110110100010…
…0000110010101
31222210112202212
41231010012111
524304343420
62500443205
7465005120
oct155040625
958715685
1028590485
1115158500
1296a9505
135c00561
143b233b7
15279b3c5
hex1b44195

28590485 has 48 divisors (see below), whose sum is σ = 44381568. Its totient is φ = 17297280.

The previous prime is 28590461. The next prime is 28590487. The reversal of 28590485 is 58409582.

28590485 = T260 + T261 + ... + T573.

It is not a de Polignac number, because 28590485 - 216 = 28524949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28590487) 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 47 ways as a sum of consecutive naturals, for example, 182027 + ... + 182183.

It is an arithmetic number, because the mean of its divisors is an integer number (924616).

Almost surely, 228590485 is an apocalyptic number.

It is an amenable number.

28590485 is a deficient number, since it is larger than the sum of its proper divisors (15791083).

28590485 is a wasteful number, since it uses less digits than its factorization.

28590485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 28590485 is about 5347.0071067841. The cubic root of 28590485 is about 305.7786607610.

The spelling of 28590485 in words is "twenty-eight million, five hundred ninety thousand, four hundred eighty-five".

Divisors: 1 5 7 11 35 43 55 77 121 157 215 301 385 473 605 785 847 1099 1505 1727 2365 3311 4235 5203 5495 6751 8635 12089 16555 18997 26015 33755 36421 47257 60445 74261 94985 132979 182105 236285 371305 519827 664895 816871 2599135 4084355 5718097 28590485