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28912653764 = 2215434684487
BaseRepresentation
bin11010111011010101…
…000001010111000100
32202121222020222202022
4122323111001113010
5433203114410024
621140550302312
72042324334131
oct327325012704
982558228668
1028912653764
1111297491785
12572a957998
13295a024b67
141583c81588
15b4344235e
hex6bb5415c4

28912653764 has 12 divisors (see below), whose sum is σ = 50629946304. Its totient is φ = 14446954824.

The previous prime is 28912653751. The next prime is 28912653773. The reversal of 28912653764 is 46735621982.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2336072 + ... + 2348415.

It is an arithmetic number, because the mean of its divisors is an integer number (4219162192).

Almost surely, 228912653764 is an apocalyptic number.

It is an amenable number.

28912653764 is a deficient number, since it is larger than the sum of its proper divisors (21717292540).

28912653764 is a wasteful number, since it uses less digits than its factorization.

28912653764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4686034 (or 4686032 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 53.

The spelling of 28912653764 in words is "twenty-eight billion, nine hundred twelve million, six hundred fifty-three thousand, seven hundred sixty-four".

Divisors: 1 2 4 1543 3086 6172 4684487 9368974 18737948 7228163441 14456326882 28912653764