Search a number
-
+
75385000 = 235415077
BaseRepresentation
bin1000111111001…
…00100010101000
312020211221210001
410133210202220
5123244310000
611251432344
71603522225
oct437444250
9166757701
1075385000
1139609959
12212b56b4
1312805912
14a02494c
15694146a
hex47e48a8

75385000 has 40 divisors (see below), whose sum is σ = 176638770. Its totient is φ = 30152000.

The previous prime is 75384997. The next prime is 75385001. The reversal of 75385000 is 58357.

It can be written as a sum of positive squares in 5 ways, for example, as 2896804 + 72488196 = 1702^2 + 8514^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 75385000.

It is not an unprimeable number, because it can be changed into a prime (75385001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2539 + ... + 12538.

Almost surely, 275385000 is an apocalyptic number.

It is an amenable number.

75385000 is an abundant number, since it is smaller than the sum of its proper divisors (101253770).

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

75385000 is a wasteful number, since it uses less digits than its factorization.

75385000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15103 (or 15084 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 75385000 is about 8682.4535702761. The cubic root of 75385000 is about 422.4367049189.

The spelling of 75385000 in words is "seventy-five million, three hundred eighty-five thousand".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 125 200 250 500 625 1000 1250 2500 5000 15077 30154 60308 75385 120616 150770 301540 376925 603080 753850 1507700 1884625 3015400 3769250 7538500 9423125 15077000 18846250 37692500 75385000