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8900471005 = 51780094201
BaseRepresentation
bin10000100101000001…
…00110100011011101
3211222021210202220021
420102200212203131
5121212010033010
64031103552141
7433363520026
oct102240464335
924867722807
108900471005
1138580a1668
1218848bb651
13abac72cba
14606107c4d
153715bb8da
hex2128268dd

8900471005 has 4 divisors (see below), whose sum is σ = 10680565212. Its totient is φ = 7120376800.

The previous prime is 8900471003. The next prime is 8900471011. The reversal of 8900471005 is 5001740098.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1635636249 + 7264834756 = 40443^2 + 85234^2 .

It is not a de Polignac number, because 8900471005 - 21 = 8900471003 is a prime.

It is a super-2 number, since 2×89004710052 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8900471003) 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, 890047096 + ... + 890047105.

It is an arithmetic number, because the mean of its divisors is an integer number (2670141303).

Almost surely, 28900471005 is an apocalyptic number.

It is an amenable number.

8900471005 is a deficient number, since it is larger than the sum of its proper divisors (1780094207).

8900471005 is a wasteful number, since it uses less digits than its factorization.

8900471005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780094206.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 8900471005 is about 94342.3076090467. The cubic root of 8900471005 is about 2072.3876550072.

The spelling of 8900471005 in words is "eight billion, nine hundred million, four hundred seventy-one thousand, five".

Divisors: 1 5 1780094201 8900471005