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87054684 = 2237254557
BaseRepresentation
bin1010011000001…
…01100101011100
320001210211120120
411030011211130
5134241222214
612345514540
72104644513
oct514054534
9201724516
1087054684
114515a522
12251a2a50
1315060462
14b7c167a
157998ea9
hex530595c

87054684 has 12 divisors (see below), whose sum is σ = 203127624. Its totient is φ = 29018224.

The previous prime is 87054647. The next prime is 87054689. The reversal of 87054684 is 48645078.

It is a tau number, because it is divible by the number of its divisors (12).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87054689) 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, 3627267 + ... + 3627290.

It is an arithmetic number, because the mean of its divisors is an integer number (16927302).

Almost surely, 287054684 is an apocalyptic number.

It is an amenable number.

87054684 is an abundant number, since it is smaller than the sum of its proper divisors (116072940).

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

87054684 is a wasteful number, since it uses less digits than its factorization.

87054684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7254564 (or 7254562 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 87054684 is about 9330.3099626968. The cubic root of 87054684 is about 443.1975808124.

The spelling of 87054684 in words is "eighty-seven million, fifty-four thousand, six hundred eighty-four".

Divisors: 1 2 3 4 6 12 7254557 14509114 21763671 29018228 43527342 87054684