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86385778 = 2319371487
BaseRepresentation
bin1010010011000…
…10010001110010
320000112212000021
411021202101302
5134103321103
612323314054
72066160403
oct511422162
9200485007
1086385778
1144842a06
1224b1b92a
1314b87b5b
14b6899aa
1578b5bbd
hex5262472

86385778 has 16 divisors (see below), whose sum is σ = 133991424. Its totient is φ = 41726880.

The previous prime is 86385773. The next prime is 86385797. The reversal of 86385778 is 87758368.

It is not an unprimeable number, because it can be changed into a prime (86385773) 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, 57351 + ... + 58837.

It is an arithmetic number, because the mean of its divisors is an integer number (8374464).

Almost surely, 286385778 is an apocalyptic number.

86385778 is a deficient number, since it is larger than the sum of its proper divisors (47605646).

86385778 is a wasteful number, since it uses less digits than its factorization.

86385778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2457.

The product of its digits is 2257920, while the sum is 52.

The square root of 86385778 is about 9294.3949776196. The cubic root of 86385778 is about 442.0595218873.

The spelling of 86385778 in words is "eighty-six million, three hundred eighty-five thousand, seven hundred seventy-eight".

Divisors: 1 2 31 62 937 1487 1874 2974 29047 46097 58094 92194 1393319 2786638 43192889 86385778