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87900226806 = 2372092862543
BaseRepresentation
bin101000111011101000…
…0110000010011110110
322101212220210011210210
41101313100300103312
52420004424224211
6104214130530250
76231151412550
oct1216720602366
9271786704723
1087900226806
1134307428447
1215051736986
13839aab3732
14437c0b04d0
152446d5b9a6
hex14774304f6

87900226806 has 16 divisors (see below), whose sum is σ = 200914804224. Its totient is φ = 25114350504.

The previous prime is 87900226801. The next prime is 87900226819. The reversal of 87900226806 is 60862200978.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87900226801) 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, 1046431230 + ... + 1046431313.

It is an arithmetic number, because the mean of its divisors is an integer number (12557175264).

Almost surely, 287900226806 is an apocalyptic number.

87900226806 is an abundant number, since it is smaller than the sum of its proper divisors (113014577418).

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

87900226806 is a wasteful number, since it uses less digits than its factorization.

87900226806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092862555.

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 87900226806 in words is "eighty-seven billion, nine hundred million, two hundred twenty-six thousand, eight hundred six".

Divisors: 1 2 3 6 7 14 21 42 2092862543 4185725086 6278587629 12557175258 14650037801 29300075602 43950113403 87900226806