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85028444 = 2228437477
BaseRepresentation
bin1010001000101…
…10111001011100
312220222220002122
411010112321130
5133231402234
612234242112
72051505224
oct504267134
9186886078
1085028444
1143aa6146
1224586338
13148010b7
14b415084
1576e892e
hex5116e5c

85028444 has 12 divisors (see below), whose sum is σ = 148872024. Its totient is φ = 42493584.

The previous prime is 85028431. The next prime is 85028459. The reversal of 85028444 is 44482058.

It is a super-2 number, since 2×850284442 = 14459672578122272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7634 + ... + 15110.

It is an arithmetic number, because the mean of its divisors is an integer number (12406002).

Almost surely, 285028444 is an apocalyptic number.

It is an amenable number.

85028444 is a deficient number, since it is larger than the sum of its proper divisors (63843580).

85028444 is a wasteful number, since it uses less digits than its factorization.

85028444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10324 (or 10322 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 35.

The square root of 85028444 is about 9221.0869207486. The cubic root of 85028444 is about 439.7320062258.

The spelling of 85028444 in words is "eighty-five million, twenty-eight thousand, four hundred forty-four".

Divisors: 1 2 4 2843 5686 7477 11372 14954 29908 21257111 42514222 85028444