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85754740 = 22529147853
BaseRepresentation
bin1010001110010…
…00001101110100
312222100210101111
411013020031310
5133423122430
612302004404
72060621551
oct507101564
9188323344
1085754740
1144451895
1224876704
13149c6866
14b563a28
1577ddc2a
hex51c8374

85754740 has 24 divisors (see below), whose sum is σ = 186296040. Its totient is φ = 33118848.

The previous prime is 85754729. The next prime is 85754761. The reversal of 85754740 is 4745758.

It can be written as a sum of positive squares in 4 ways, for example, as 155236 + 85599504 = 394^2 + 9252^2 .

It is a junction number, because it is equal to n+sod(n) for n = 85754693 and 85754702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73347 + ... + 74506.

It is an arithmetic number, because the mean of its divisors is an integer number (7762335).

Almost surely, 285754740 is an apocalyptic number.

It is an amenable number.

85754740 is an abundant number, since it is smaller than the sum of its proper divisors (100541300).

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

85754740 is a wasteful number, since it uses less digits than its factorization.

85754740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147891 (or 147889 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 85754740 is about 9260.3855211325. The cubic root of 85754740 is about 440.9804925186.

The spelling of 85754740 in words is "eighty-five million, seven hundred fifty-four thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 29 58 116 145 290 580 147853 295706 591412 739265 1478530 2957060 4287737 8575474 17150948 21438685 42877370 85754740