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28874739230 = 254336668531
BaseRepresentation
bin11010111001000100…
…011000111000011110
32202112022220201210022
4122321010120320132
5433113413123410
621133113512142
72041354143131
oct327104307036
982468821708
1028874739230
1111278045a57
12571a112652
13295220b61c
14157cc12218
15b3ee53455
hex6b9118e1e

28874739230 has 16 divisors (see below), whose sum is σ = 52094571984. Its totient is φ = 11523219840.

The previous prime is 28874739221. The next prime is 28874739233. The reversal of 28874739230 is 3293747882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28874739233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3329936 + ... + 3338595.

It is an arithmetic number, because the mean of its divisors is an integer number (3255910749).

Almost surely, 228874739230 is an apocalyptic number.

28874739230 is a deficient number, since it is larger than the sum of its proper divisors (23219832754).

28874739230 is a wasteful number, since it uses less digits than its factorization.

28874739230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6668971.

The product of its (nonzero) digits is 4064256, while the sum is 53.

The spelling of 28874739230 in words is "twenty-eight billion, eight hundred seventy-four million, seven hundred thirty-nine thousand, two hundred thirty".

Divisors: 1 2 5 10 433 866 2165 4330 6668531 13337062 33342655 66685310 2887473923 5774947846 14437369615 28874739230