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88380131028780 = 22351977526430727
BaseRepresentation
bin10100000110000110011010…
…010100001010111100101100
3102120221001120021211110221010
4110012012122110022330230
543041010002020410110
6511545134403505220
724421153015431033
oct2406063224127454
9376831507743833
1088380131028780
112618489199a5a8
129ab47b3088210
133a412978a58b6
1417b789a69b71a
15a33e83cb0020
hex50619a50af2c

88380131028780 has 48 divisors (see below), whose sum is σ = 260488807246080. Its totient is φ = 22327612049088.

The previous prime is 88380131028757. The next prime is 88380131028793. The reversal of 88380131028780 is 8782013108388.

It is a super-2 number, since 2×883801310287802 (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 88380131028780.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38763214224 + ... + 38763216503.

It is an arithmetic number, because the mean of its divisors is an integer number (5426850150960).

Almost surely, 288380131028780 is an apocalyptic number.

It is an amenable number.

88380131028780 is an abundant number, since it is smaller than the sum of its proper divisors (172108676217300).

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

88380131028780 is a wasteful number, since it uses less digits than its factorization.

88380131028780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77526430758 (or 77526430756 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 57.

The spelling of 88380131028780 in words is "eighty-eight trillion, three hundred eighty billion, one hundred thirty-one million, twenty-eight thousand, seven hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 19 20 30 38 57 60 76 95 114 190 228 285 380 570 1140 77526430727 155052861454 232579292181 310105722908 387632153635 465158584362 775264307270 930317168724 1162896460905 1473002183813 1550528614540 2325792921810 2946004367626 4419006551439 4651585843620 5892008735252 7365010919065 8838013102878 14730021838130 17676026205756 22095032757195 29460043676260 44190065514390 88380131028780