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28052829 = 327445283
BaseRepresentation
bin110101100000…
…0110101011101
31221210020020200
41223000311131
524140142304
62441134113
7460305450
oct153006535
957706220
1028052829
1114920562
12948a339
135a7290c
143a23497
1526e1e39
hex1ac0d5d

28052829 has 12 divisors (see below), whose sum is σ = 46309536. Its totient is φ = 16030152.

The previous prime is 28052819. The next prime is 28052837. The reversal of 28052829 is 92825082.

It is not a de Polignac number, because 28052829 - 28 = 28052573 is a prime.

It is a super-2 number, since 2×280528292 = 1573922429806482, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28052793 and 28052802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28052809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 222579 + ... + 222704.

It is an arithmetic number, because the mean of its divisors is an integer number (3859128).

Almost surely, 228052829 is an apocalyptic number.

It is an amenable number.

28052829 is a deficient number, since it is larger than the sum of its proper divisors (18256707).

28052829 is a wasteful number, since it uses less digits than its factorization.

28052829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445296 (or 445293 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 28052829 is about 5296.4921410307. The cubic root of 28052829 is about 303.8497533466.

The spelling of 28052829 in words is "twenty-eight million, fifty-two thousand, eight hundred twenty-nine".

Divisors: 1 3 7 9 21 63 445283 1335849 3116981 4007547 9350943 28052829