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75052120 = 235111313121
BaseRepresentation
bin1000111100100…
…11010001011000
312020020001011011
410132103101120
5123203131440
611240343304
71600634563
oct436232130
9166201134
1075052120
1139401850
1221174b34
131271a250
149d794da
1568c79ea
hex4793458

75052120 has 64 divisors (see below), whose sum is σ = 198404640. Its totient is φ = 25190400.

The previous prime is 75052111. The next prime is 75052129. The reversal of 75052120 is 2125057.

It is an interprime number because it is at equal distance from previous prime (75052111) and next prime (75052129).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 75052091 and 75052100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75052129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 841 + ... + 12280.

Almost surely, 275052120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75052120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99202320).

75052120 is an abundant number, since it is smaller than the sum of its proper divisors (123352520).

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

75052120 is a wasteful number, since it uses less digits than its factorization.

75052120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13156 (or 13152 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 75052120 is about 8663.2626648394. The cubic root of 75052120 is about 421.8139982763.

Adding to 75052120 its reverse (2125057), we get a palindrome (77177177).

The spelling of 75052120 in words is "seventy-five million, fifty-two thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 11 13 20 22 26 40 44 52 55 65 88 104 110 130 143 220 260 286 440 520 572 715 1144 1430 2860 5720 13121 26242 52484 65605 104968 131210 144331 170573 262420 288662 341146 524840 577324 682292 721655 852865 1154648 1364584 1443310 1705730 1876303 2886620 3411460 3752606 5773240 6822920 7505212 9381515 15010424 18763030 37526060 75052120