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90086854 = 21113314989
BaseRepresentation
bin1010101111010…
…01110111000110
320021111212221011
411113221313012
5141030234404
612534512434
72142503614
oct527516706
9207455834
1090086854
1146940650
122620571a
1315882640
14bd706b4
157d97604
hex55e9dc6

90086854 has 16 divisors (see below), whose sum is σ = 158754960. Its totient is φ = 37798560.

The previous prime is 90086851. The next prime is 90086861. The reversal of 90086854 is 45868009.

It is a super-3 number, since 3×900868543 (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90086851) 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, 157209 + ... + 157780.

It is an arithmetic number, because the mean of its divisors is an integer number (9922185).

Almost surely, 290086854 is an apocalyptic number.

90086854 is a deficient number, since it is larger than the sum of its proper divisors (68668106).

90086854 is a wasteful number, since it uses less digits than its factorization.

90086854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315015.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 90086854 is about 9491.4094843706. The cubic root of 90086854 is about 448.2845867992.

The spelling of 90086854 in words is "ninety million, eighty-six thousand, eight hundred fifty-four".

Divisors: 1 2 11 13 22 26 143 286 314989 629978 3464879 4094857 6929758 8189714 45043427 90086854