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90041887 = 1331223429
BaseRepresentation
bin1010101110111…
…10111000011111
320021102121020201
411113132320133
5141022320022
612533524331
72142225535
oct527367037
9207377221
1090041887
114690a891
12261a36a7
1315868030
14bd5c155
157d89127
hex55dee1f

90041887 has 8 divisors (see below), whose sum is σ = 100096640. Its totient is φ = 80434080.

The previous prime is 90041873. The next prime is 90041921. The reversal of 90041887 is 78814009.

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

It is a cyclic number.

It is not a de Polignac number, because 90041887 - 215 = 90009119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90041087) 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, 111312 + ... + 112117.

It is an arithmetic number, because the mean of its divisors is an integer number (12512080).

Almost surely, 290041887 is an apocalyptic number.

90041887 is the 5479-th hex number.

90041887 is a deficient number, since it is larger than the sum of its proper divisors (10054753).

90041887 is a wasteful number, since it uses less digits than its factorization.

90041887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223473.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 90041887 is about 9489.0403624392. The cubic root of 90041887 is about 448.2099870583.

The spelling of 90041887 in words is "ninety million, forty-one thousand, eight hundred eighty-seven".

Divisors: 1 13 31 403 223429 2904577 6926299 90041887