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75344672 = 25131391303
BaseRepresentation
bin1000111110110…
…10101100100000
312020202220110102
410133122230200
5123242012142
611250521532
71603263524
oct437325440
9166686412
1075344672
1139591627
12212962a8
13127c0460
14a013d84
156934532
hex47dab20

75344672 has 48 divisors (see below), whose sum is σ = 161017920. Its totient is φ = 34497792.

The previous prime is 75344669. The next prime is 75344677. The reversal of 75344672 is 27644357.

It is not an unprimeable number, because it can be changed into a prime (75344677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57173 + ... + 58475.

It is an arithmetic number, because the mean of its divisors is an integer number (3354540).

Almost surely, 275344672 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 75344672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80508960).

75344672 is an abundant number, since it is smaller than the sum of its proper divisors (85673248).

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

75344672 is a wasteful number, since it uses less digits than its factorization.

75344672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465 (or 1457 counting only the distinct ones).

The product of its digits is 141120, while the sum is 38.

The square root of 75344672 is about 8680.1308745894. The cubic root of 75344672 is about 422.3613624936.

The spelling of 75344672 in words is "seventy-five million, three hundred forty-four thousand, six hundred seventy-two".

Divisors: 1 2 4 8 13 16 26 32 52 104 139 208 278 416 556 1112 1303 1807 2224 2606 3614 4448 5212 7228 10424 14456 16939 20848 28912 33878 41696 57824 67756 135512 181117 271024 362234 542048 724468 1448936 2354521 2897872 4709042 5795744 9418084 18836168 37672336 75344672