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89387086540 = 22567208731963
BaseRepresentation
bin101001100111111100…
…0101011001011001100
322112201112120110220211
41103033320223023030
52431031043232130
6105021443252204
76313044461563
oct1231770531314
9275645513824
1089387086540
11349aa753144
12153a767a064
138576b549ab
14447d752bda
1524d265ca2a
hex14cfe2b2cc

89387086540 has 48 divisors (see below), whose sum is σ = 190611816192. Its totient is φ = 35203202496.

The previous prime is 89387086507. The next prime is 89387086549. The reversal of 89387086540 is 4568078398.

It is not an unprimeable number, because it can be changed into a prime (89387086549) 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, 2780599 + ... + 2812561.

It is an arithmetic number, because the mean of its divisors is an integer number (3971079504).

Almost surely, 289387086540 is an apocalyptic number.

It is an amenable number.

89387086540 is an abundant number, since it is smaller than the sum of its proper divisors (101224729652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89387086540 is a wasteful number, since it uses less digits than its factorization.

89387086540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34126 (or 34124 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 58.

The spelling of 89387086540 in words is "eighty-nine billion, three hundred eighty-seven million, eighty-six thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 67 134 268 335 670 1340 2087 4174 8348 10435 20870 31963 41740 63926 127852 139829 159815 279658 319630 559316 639260 699145 1398290 2141521 2796580 4283042 8566084 10707605 21415210 42830420 66706781 133413562 266827124 333533905 667067810 1334135620 4469354327 8938708654 17877417308 22346771635 44693543270 89387086540