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90289259 = 166354293
BaseRepresentation
bin1010110000110…
…11010001101011
320021220011120122
411120123101223
5141103224014
612543113455
72144305664
oct530332153
9207804518
1090289259
1146a69725
12262a288b
13159237c8
14bdc436b
157dd758e
hex561b46b

90289259 has 4 divisors (see below), whose sum is σ = 90345216. Its totient is φ = 90233304.

The previous prime is 90289229. The next prime is 90289271. The reversal of 90289259 is 95298209.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95298209 = 175605777.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-90289259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90289229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25484 + ... + 28809.

It is an arithmetic number, because the mean of its divisors is an integer number (22586304).

Almost surely, 290289259 is an apocalyptic number.

90289259 is a deficient number, since it is larger than the sum of its proper divisors (55957).

90289259 is a wasteful number, since it uses less digits than its factorization.

90289259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55956.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 90289259 is about 9502.0660384992. The cubic root of 90289259 is about 448.6200673889.

The spelling of 90289259 in words is "ninety million, two hundred eighty-nine thousand, two hundred fifty-nine".

Divisors: 1 1663 54293 90289259