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87228849 = 3173168071
BaseRepresentation
bin1010011001100…
…00000110110001
320002010200111010
411030300012301
5134312310344
612353341133
72106301341
oct514600661
9202120433
1087228849
1145269364
12252677a9
13150c1806
14b828d21
1579d08b9
hex53301b1

87228849 has 8 divisors (see below), whose sum is σ = 116978112. Its totient is φ = 57816080.

The previous prime is 87228803. The next prime is 87228893. The reversal of 87228849 is 94882278.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87228849 - 211 = 87226801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87228798 and 87228807.

It is not an unprimeable number, because it can be changed into a prime (87228149) 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, 83517 + ... + 84554.

It is an arithmetic number, because the mean of its divisors is an integer number (14622264).

Almost surely, 287228849 is an apocalyptic number.

It is an amenable number.

87228849 is a deficient number, since it is larger than the sum of its proper divisors (29749263).

87228849 is a wasteful number, since it uses less digits than its factorization.

87228849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168247.

The product of its digits is 516096, while the sum is 48.

The square root of 87228849 is about 9339.6385904381. The cubic root of 87228849 is about 443.4929433904.

It can be divided in two parts, 8722 and 8849, that added together give a palindrome (17571).

The spelling of 87228849 in words is "eighty-seven million, two hundred twenty-eight thousand, eight hundred forty-nine".

Divisors: 1 3 173 519 168071 504213 29076283 87228849