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90928192910 = 25172392237957
BaseRepresentation
bin101010010101110111…
…1100001110110001110
322200200221102210102112
41110223233201312032
52442210104133120
6105434414424022
76366166613222
oct1245357416616
9280627383375
1090928192910
113562065a175
1215757802012
13876120a259
1445882b6782
152572ac6bc5
hex152bbe1d8e

90928192910 has 32 divisors (see below), whose sum is σ = 174023614080. Its totient is φ = 34088545792.

The previous prime is 90928192889. The next prime is 90928192919. The reversal of 90928192910 is 1929182909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90928192919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1078349 + ... + 1159608.

It is an arithmetic number, because the mean of its divisors is an integer number (5438237940).

Almost surely, 290928192910 is an apocalyptic number.

90928192910 is a deficient number, since it is larger than the sum of its proper divisors (83095421170).

90928192910 is a wasteful number, since it uses less digits than its factorization.

90928192910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238220.

The product of its (nonzero) digits is 209952, while the sum is 50.

The spelling of 90928192910 in words is "ninety billion, nine hundred twenty-eight million, one hundred ninety-two thousand, nine hundred ten".

Divisors: 1 2 5 10 17 34 85 170 239 478 1195 2390 4063 8126 20315 40630 2237957 4475914 11189785 22379570 38045269 76090538 190226345 380452690 534871723 1069743446 2674358615 5348717230 9092819291 18185638582 45464096455 90928192910