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28758056060805 = 352923023754109
BaseRepresentation
bin1101000100111110000011…
…01101110100011110000101
310202211020120101001202202020
412202133001231310132011
512232132444322421210
6141055134002233353
76025462303160151
oct642370155643605
9122736511052666
1028758056060805
11918824aa1a705
123285606955859
131307b47125916
14715c7c430061
1534d0e2b19770
hex1a27c1b74785

28758056060805 has 48 divisors (see below), whose sum is σ = 47670080290560. Its totient is φ = 14803827786496.

The previous prime is 28758056060791. The next prime is 28758056060821. The reversal of 28758056060805 is 50806065085782.

It is a happy number.

It is not a de Polignac number, because 28758056060805 - 28 = 28758056060549 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 37758091 + ... + 38512199.

It is an arithmetic number, because the mean of its divisors is an integer number (993126672720).

Almost surely, 228758056060805 is an apocalyptic number.

It is an amenable number.

28758056060805 is a deficient number, since it is larger than the sum of its proper divisors (18912024229755).

28758056060805 is a wasteful number, since it uses less digits than its factorization.

28758056060805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757198 (or 757169 counting only the distinct ones).

The product of its (nonzero) digits is 32256000, while the sum is 60.

The spelling of 28758056060805 in words is "twenty-eight trillion, seven hundred fifty-eight billion, fifty-six million, sixty thousand, eight hundred five".

Divisors: 1 3 5 15 29 87 145 435 841 2523 3023 4205 9069 12615 15115 45345 87667 263001 438335 754109 1315005 2262327 2542343 3770545 7627029 11311635 12711715 21869161 38135145 65607483 109345805 328037415 634205669 1902617007 2279671507 3171028345 6839014521 9513085035 11398357535 34195072605 66110473703 198331421109 330552368515 991657105545 1917203737387 5751611212161 9586018686935 28758056060805