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28912046814 = 2327762130109
BaseRepresentation
bin11010111011010010…
…101101001011011110
32202121221010011011200
4122323102231023132
5433202440444224
621140525300330
72042316225450
oct327322551336
982557104150
1028912046814
1111297107772
12572a7046a6
132959b71811
141583b642d0
15b433725c9
hex6bb4ad2de

28912046814 has 48 divisors (see below), whose sum is σ = 71603507040. Its totient is φ = 8259226560.

The previous prime is 28912046797. The next prime is 28912046819. The reversal of 28912046814 is 41864021982.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28912046814.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28912046819) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 945192 + ... + 975300.

It is an arithmetic number, because the mean of its divisors is an integer number (1491739730).

Almost surely, 228912046814 is an apocalyptic number.

28912046814 is an abundant number, since it is smaller than the sum of its proper divisors (42691460226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28912046814 is a wasteful number, since it uses less digits than its factorization.

28912046814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37745 (or 37742 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 28912046814 in words is "twenty-eight billion, nine hundred twelve million, forty-six thousand, eight hundred fourteen".

Divisors: 1 2 3 6 7 9 14 18 21 42 63 126 7621 15242 22863 30109 45726 53347 60218 68589 90327 106694 137178 160041 180654 210763 270981 320082 421526 480123 541962 632289 960246 1264578 1896867 3793734 229460689 458921378 688382067 1376764134 1606224823 2065146201 3212449646 4130292402 4818674469 9637348938 14456023407 28912046814