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28999002230103 = 3471992994734511
BaseRepresentation
bin1101001011111110110110…
…01110100000110101010111
310210200021111022210101000110
412211333123032200311113
512300104424032330403
6141401542511014103
76052052210625063
oct645773316406527
9123607438711013
1028999002230103
119270453835944
12330424b20a333
131324795537629
147237b8616aa3
153544e5b72103
hex1a5fdb3a0d57

28999002230103 has 32 divisors (see below), whose sum is σ = 39688910438400. Its totient is φ = 18825078555360.

The previous prime is 28999002230063. The next prime is 28999002230119. The reversal of 28999002230103 is 30103220099982.

It is a happy number.

It is not a de Polignac number, because 28999002230103 - 218 = 28999001967959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28999002230123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 840265618 + ... + 840300128.

It is an arithmetic number, because the mean of its divisors is an integer number (1240278451200).

Almost surely, 228999002230103 is an apocalyptic number.

28999002230103 is a deficient number, since it is larger than the sum of its proper divisors (10689908208297).

28999002230103 is a wasteful number, since it uses less digits than its factorization.

28999002230103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64707.

The product of its (nonzero) digits is 419904, while the sum is 48.

The spelling of 28999002230103 in words is "twenty-eight trillion, nine hundred ninety-nine billion, two million, two hundred thirty thousand, one hundred three".

Divisors: 1 3 47 141 199 597 9353 28059 29947 34511 89841 103533 1407509 1622017 4222527 4866051 5959453 6867689 17878359 20603067 280094291 322781383 840282873 968344149 1033500917 3100502751 48574543099 145723629297 205666682483 617000047449 9666334076701 28999002230103