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86381868 = 22326832
BaseRepresentation
bin1010010011000…
…01010100101100
320000112122122110
411021201110230
5134103204433
612323244020
72066143116
oct511412454
9200478573
1086381868
114483aa81
1224b19610
1314b86141
14b6883b6
1578b4963
hex526152c

86381868 has 18 divisors (see below), whose sum is σ = 201632844. Its totient is φ = 28783224.

The previous prime is 86381863. The next prime is 86381873. The reversal of 86381868 is 86818368.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (86381863) and next prime (86381873).

It is not an unprimeable number, because it can be changed into a prime (86381861) 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 5 ways as a sum of consecutive naturals, for example, 30855 + ... + 33537.

Almost surely, 286381868 is an apocalyptic number.

It is an amenable number.

86381868 is an abundant number, since it is smaller than the sum of its proper divisors (115250976).

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

86381868 is an equidigital number, since it uses as much as digits as its factorization.

86381868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5373 (or 2688 counting only the distinct ones).

The product of its digits is 442368, while the sum is 48.

The square root of 86381868 is about 9294.1846334146. The cubic root of 86381868 is about 442.0528522755.

Multiplying 86381868 by its sum of digits (48), we get a square (4146329664 = 643922).

Multiplying 86381868 by its product of digits (442368), we get a square (38212574183424 = 61816322).

The spelling of 86381868 in words is "eighty-six million, three hundred eighty-one thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 12 2683 5366 8049 10732 16098 32196 7198489 14396978 21595467 28793956 43190934 86381868