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87894288 = 2433203459
BaseRepresentation
bin1010011110100…
…10100100010000
320010101111022000
411033102210100
5140000104123
612415514000
72115042366
oct517224420
9203344260
1087894288
1145683309
1225528900
1315295671
14b95d636
157ab2b43
hex53d2910

87894288 has 40 divisors (see below), whose sum is σ = 252290400. Its totient is φ = 29297952.

The previous prime is 87894281. The next prime is 87894307. The reversal of 87894288 is 88249878.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (87894281) 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 7 ways as a sum of consecutive naturals, for example, 101298 + ... + 102161.

It is an arithmetic number, because the mean of its divisors is an integer number (6307260).

Almost surely, 287894288 is an apocalyptic number.

It is an amenable number.

87894288 is an abundant number, since it is smaller than the sum of its proper divisors (164396112).

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

87894288 is a wasteful number, since it uses less digits than its factorization.

87894288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203476 (or 203464 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 54.

The square root of 87894288 is about 9375.1953579645. The cubic root of 87894288 is about 444.6178396392.

The spelling of 87894288 in words is "eighty-seven million, eight hundred ninety-four thousand, two hundred eighty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 108 144 216 432 203459 406918 610377 813836 1220754 1627672 1831131 2441508 3255344 3662262 4883016 5493393 7324524 9766032 10986786 14649048 21973572 29298096 43947144 87894288