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87083438078 = 27213361318919
BaseRepresentation
bin101000100011010010…
…0111100111111111110
322022202222212000022102
41101012210330333332
52411321330004303
6104001112145102
76202003003400
oct1210644747776
9268688760272
1087083438078
1133a2836aa3a
1214a64098192
13829a802cb0
144301814b70
1523ea2ba288
hex144693cffe

87083438078 has 48 divisors (see below), whose sum is σ = 163694250720. Its totient is φ = 34439235264.

The previous prime is 87083438047. The next prime is 87083438089.

87083438078 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4593503 + ... + 4612421.

It is an arithmetic number, because the mean of its divisors is an integer number (3410296890).

Almost surely, 287083438078 is an apocalyptic number.

87083438078 is a deficient number, since it is larger than the sum of its proper divisors (76610812642).

87083438078 is a wasteful number, since it uses less digits than its factorization.

87083438078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22561 (or 22554 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 56.

The spelling of 87083438078 in words is "eighty-seven billion, eighty-three million, four hundred thirty-eight thousand, seventy-eight".

Divisors: 1 2 7 13 14 26 49 91 98 182 637 1274 3613 7226 18919 25291 37838 46969 50582 93938 132433 177037 245947 264866 328783 354074 491894 657566 927031 1721629 1854062 2301481 3443258 4602962 12051403 24102806 68354347 136708694 478480429 888606511 956960858 1777213022 3349363003 6220245577 6698726006 12440491154 43541719039 87083438078