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28988848472 = 2320593175963
BaseRepresentation
bin11010111111110111…
…101011100101011000
32202211021122002020112
4122333313223211120
5433332121122342
621152311343452
72044241101133
oct327767534530
982737562215
1028988848472
11113264a3a11
125750381b88
13296ca5219c
14159003721a
15b49e93682
hex6bfdeb958

28988848472 has 16 divisors (see below), whose sum is σ = 54357039240. Its totient is φ = 14493638016.

The previous prime is 28988848457. The next prime is 28988848501. The reversal of 28988848472 is 27484888982.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76763 + ... + 252725.

Almost surely, 228988848472 is an apocalyptic number.

It is an amenable number.

28988848472 is a deficient number, since it is larger than the sum of its proper divisors (25368190768).

28988848472 is a wasteful number, since it uses less digits than its factorization.

28988848472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196562 (or 196558 counting only the distinct ones).

The product of its digits is 132120576, while the sum is 68.

The spelling of 28988848472 in words is "twenty-eight billion, nine hundred eighty-eight million, eight hundred forty-eight thousand, four hundred seventy-two".

Divisors: 1 2 4 8 20593 41186 82372 164744 175963 351926 703852 1407704 3623606059 7247212118 14494424236 28988848472