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87227460 = 22325484597
BaseRepresentation
bin1010011001011…
…11110001000100
320002010121120200
411030233301010
5134312234320
612353330500
72106264315
oct514576104
9202117520
1087227460
1145268311
1225266a30
13150c0ca8
14b82860c
1579d0290
hex532fc44

87227460 has 36 divisors (see below), whose sum is σ = 264590508. Its totient is φ = 23260608.

The previous prime is 87227407. The next prime is 87227467. The reversal of 87227460 is 6472278.

It can be written as a sum of positive squares in 2 ways, for example, as 33732864 + 53494596 = 5808^2 + 7314^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (87227467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242119 + ... + 242478.

Almost surely, 287227460 is an apocalyptic number.

It is an amenable number.

87227460 is an abundant number, since it is smaller than the sum of its proper divisors (177363048).

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

87227460 is a wasteful number, since it uses less digits than its factorization.

87227460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484612 (or 484607 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 87227460 is about 9339.5642296630. The cubic root of 87227460 is about 443.4905893719.

The spelling of 87227460 in words is "eighty-seven million, two hundred twenty-seven thousand, four hundred sixty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 484597 969194 1453791 1938388 2422985 2907582 4361373 4845970 5815164 7268955 8722746 9691940 14537910 17445492 21806865 29075820 43613730 87227460