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BaseRepresentation
bin1010011011010…
…11011100100010
320002121000220020
411031223130202
5134343100111
612402454310
72111333064
oct515533442
9202530806
1087471906
1145414a35
1225364396
1315178332
14b88d734
157a2c906
hex536b722

87471906 has 8 divisors (see below), whose sum is σ = 174943824. Its totient is φ = 29157300.

The previous prime is 87471899. The next prime is 87471911. The reversal of 87471906 is 60917478.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7289320 + ... + 7289331.

It is an arithmetic number, because the mean of its divisors is an integer number (21867978).

Almost surely, 287471906 is an apocalyptic number.

87471906 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

87471906 is a wasteful number, since it uses less digits than its factorization.

87471906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14578656.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 87471906 is about 9352.6416589111. The cubic root of 87471906 is about 443.9044819280.

The spelling of 87471906 in words is "eighty-seven million, four hundred seventy-one thousand, nine hundred six".

Divisors: 1 2 3 6 14578651 29157302 43735953 87471906