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90107082 = 232132191559
BaseRepresentation
bin1010101111011…
…10110011001010
320021112220200100
411113232303022
5141031411312
612535150230
72142616602
oct527566312
9207486610
1090107082
114695486a
1226215376
131588b900
14bd77c02
157d9d5dc
hex55eecca

90107082 has 72 divisors (see below), whose sum is σ = 222674400. Its totient is φ = 26249184.

The previous prime is 90107081. The next prime is 90107093. The reversal of 90107082 is 28070109.

It is not an unprimeable number, because it can be changed into a prime (90107081) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 57019 + ... + 58577.

It is an arithmetic number, because the mean of its divisors is an integer number (3092700).

Almost surely, 290107082 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90107082, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111337200).

90107082 is an abundant number, since it is smaller than the sum of its proper divisors (132567318).

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

90107082 is a wasteful number, since it uses less digits than its factorization.

90107082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612 (or 1596 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 90107082 is about 9492.4750197196. The cubic root of 90107082 is about 448.3181367258.

The spelling of 90107082 in words is "ninety million, one hundred seven thousand, eighty-two".

Divisors: 1 2 3 6 9 13 18 19 26 38 39 57 78 114 117 169 171 234 247 338 342 494 507 741 1014 1482 1521 1559 2223 3042 3118 3211 4446 4677 6422 9354 9633 14031 19266 20267 28062 28899 29621 40534 57798 59242 60801 88863 121602 177726 182403 263471 266589 364806 385073 526942 533178 770146 790413 1155219 1580826 2310438 2371239 3465657 4742478 5005949 6931314 10011898 15017847 30035694 45053541 90107082