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85247756 = 221119107953
BaseRepresentation
bin1010001010011…
…00011100001100
312221102000221022
411011030130030
5133310412011
612243053312
72053410506
oct505143414
9187360838
1085247756
11441359a0
1224671238
1314879b79
14b470d76
15773d8db
hex514c70c

85247756 has 48 divisors (see below), whose sum is σ = 173093760. Its totient is φ = 36328320.

The previous prime is 85247753. The next prime is 85247759. The reversal of 85247756 is 65774258.

It is an interprime number because it is at equal distance from previous prime (85247753) and next prime (85247759).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (85247753) 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 15 ways as a sum of consecutive naturals, for example, 88976 + ... + 89928.

It is an arithmetic number, because the mean of its divisors is an integer number (3606120).

Almost surely, 285247756 is an apocalyptic number.

It is an amenable number.

85247756 is an abundant number, since it is smaller than the sum of its proper divisors (87846004).

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

85247756 is a wasteful number, since it uses less digits than its factorization.

85247756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094 (or 1092 counting only the distinct ones).

The product of its digits is 470400, while the sum is 44.

The square root of 85247756 is about 9232.9711360970. The cubic root of 85247756 is about 440.1097453522.

The spelling of 85247756 in words is "eighty-five million, two hundred forty-seven thousand, seven hundred fifty-six".

Divisors: 1 2 4 11 19 22 38 44 76 107 209 214 418 428 836 953 1177 1906 2033 2354 3812 4066 4708 8132 10483 18107 20966 22363 36214 41932 44726 72428 89452 101971 199177 203942 398354 407884 796708 1121681 1937449 2243362 3874898 4486724 7749796 21311939 42623878 85247756