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87298806 = 23719109397
BaseRepresentation
bin1010011010000…
…01001011110110
320002021020110010
411031001023312
5134322030211
612355041050
72110012320
oct515011366
9202236403
1087298806
1145306981
12252a0186
13151175ca
14b846610
1579e64a6
hex53412f6

87298806 has 32 divisors (see below), whose sum is σ = 210044160. Its totient is φ = 23629536.

The previous prime is 87298781. The next prime is 87298807. The reversal of 87298806 is 60889278.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87298807) 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 15 ways as a sum of consecutive naturals, for example, 53901 + ... + 55496.

It is an arithmetic number, because the mean of its divisors is an integer number (6563880).

Almost surely, 287298806 is an apocalyptic number.

87298806 is an abundant number, since it is smaller than the sum of its proper divisors (122745354).

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

87298806 is a wasteful number, since it uses less digits than its factorization.

87298806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109428.

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 87298806 is about 9343.3830061707. The cubic root of 87298806 is about 443.6114712468.

The spelling of 87298806 in words is "eighty-seven million, two hundred ninety-eight thousand, eight hundred six".

Divisors: 1 2 3 6 7 14 19 21 38 42 57 114 133 266 399 798 109397 218794 328191 656382 765779 1531558 2078543 2297337 4157086 4594674 6235629 12471258 14549801 29099602 43649403 87298806