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85258800 = 243252112153
BaseRepresentation
bin1010001010011…
…11001000110000
312221102121002100
411011033020300
5133311240200
612243220400
72053454634
oct505171060
9187377070
1085258800
1144143220
1224677700
1314881bc3
14b474dc4
157741d00
hex514f230

85258800 has 180 divisors, whose sum is σ = 322919064. Its totient is φ = 20659200.

The previous prime is 85258793. The next prime is 85258801. The reversal of 85258800 is 885258.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (85258801) 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 35 ways as a sum of consecutive naturals, for example, 38524 + ... + 40676.

Almost surely, 285258800 is an apocalyptic number.

85258800 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85258800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161459532).

85258800 is an abundant number, since it is smaller than the sum of its proper divisors (237660264).

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

85258800 is a wasteful number, since it uses less digits than its factorization.

85258800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188 (or 2174 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The square root of 85258800 is about 9233.5691907301. The cubic root of 85258800 is about 440.1287502010.

The spelling of 85258800 in words is "eighty-five million, two hundred fifty-eight thousand, eight hundred".