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90169107 = 374293767
BaseRepresentation
bin1010101111111…
…01111100010011
320021200001202120
411113331330103
5141040402412
612540345323
72143265460
oct527757423
9207601676
1090169107
1146997426
1226245243
13158b0c02
14bd92667
157db1b8c
hex55fdf13

90169107 has 8 divisors (see below), whose sum is σ = 137400576. Its totient is φ = 51525192.

The previous prime is 90169097. The next prime is 90169133. The reversal of 90169107 is 70196109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90169107 - 26 = 90169043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90169507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2146863 + ... + 2146904.

It is an arithmetic number, because the mean of its divisors is an integer number (17175072).

Almost surely, 290169107 is an apocalyptic number.

90169107 is a deficient number, since it is larger than the sum of its proper divisors (47231469).

90169107 is a wasteful number, since it uses less digits than its factorization.

90169107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4293777.

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 90169107 is about 9495.7415192285. The cubic root of 90169107 is about 448.4209793806.

The spelling of 90169107 in words is "ninety million, one hundred sixty-nine thousand, one hundred seven".

Divisors: 1 3 7 21 4293767 12881301 30056369 90169107