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87054090 = 2355354751
BaseRepresentation
bin1010011000001…
…01011100001010
320001210210202120
411030011130022
5134241212330
612345512110
72104643004
oct514053412
9201723676
1087054090
114515a032
12251a2636
13150600c6
14b7c1374
157998c10
hex530570a

87054090 has 32 divisors (see below), whose sum is σ = 212875776. Its totient is φ = 22776000.

The previous prime is 87054083. The next prime is 87054091. The reversal of 87054090 is 9045078.

It is not an unprimeable number, because it can be changed into a prime (87054091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25786 + ... + 28965.

It is an arithmetic number, because the mean of its divisors is an integer number (6652368).

Almost surely, 287054090 is an apocalyptic number.

87054090 is an abundant number, since it is smaller than the sum of its proper divisors (125821686).

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

87054090 is a wasteful number, since it uses less digits than its factorization.

87054090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54814.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 87054090 is about 9330.2781309026. The cubic root of 87054090 is about 443.1965727871.

The spelling of 87054090 in words is "eighty-seven million, fifty-four thousand, ninety".

Divisors: 1 2 3 5 6 10 15 30 53 106 159 265 318 530 795 1590 54751 109502 164253 273755 328506 547510 821265 1642530 2901803 5803606 8705409 14509015 17410818 29018030 43527045 87054090