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142928490894 = 23726312939389
BaseRepresentation
bin1000010100011100110…
…0111011000110001110
3111122220221011122000220
42011013030323012032
54320204143202034
6145354353332210
713216621061430
oct2050714730616
9448827148026
10142928490894
1155685452752
122384a567066
131062a4c9b47
146cbc53c650
153ab7d8c749
hex214733b18e

142928490894 has 32 divisors (see below), whose sum is σ = 327935900160. Its totient is φ = 40681435872.

The previous prime is 142928490871. The next prime is 142928490949. The reversal of 142928490894 is 498094829241.

It is a congruent number.

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, 6458649 + ... + 6480740.

It is an arithmetic number, because the mean of its divisors is an integer number (10247996880).

Almost surely, 2142928490894 is an apocalyptic number.

142928490894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

142928490894 is an abundant number, since it is smaller than the sum of its proper divisors (185007409266).

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

142928490894 is a wasteful number, since it uses less digits than its factorization.

142928490894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12939664.

The product of its (nonzero) digits is 11943936, while the sum is 60.

The spelling of 142928490894 in words is "one hundred forty-two billion, nine hundred twenty-eight million, four hundred ninety thousand, eight hundred ninety-four".

Divisors: 1 2 3 6 7 14 21 42 263 526 789 1578 1841 3682 5523 11046 12939389 25878778 38818167 77636334 90575723 181151446 271727169 543454338 3403059307 6806118614 10209177921 20418355842 23821415149 47642830298 71464245447 142928490894