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75134980 = 2259473967
BaseRepresentation
bin1000111101001…
…11100000000100
312020101020211001
410132213200010
5123213304410
611242223044
71601431264
oct436474004
9166336731
1075134980
1139459028
12211b4a84
1312748b8b
149d9b7a4
1568e233a
hex47a7804

75134980 has 24 divisors (see below), whose sum is σ = 157989888. Its totient is φ = 30014688.

The previous prime is 75134963. The next prime is 75134989. The reversal of 75134980 is 8943157.

It is not an unprimeable number, because it can be changed into a prime (75134989) 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 7 ways as a sum of consecutive naturals, for example, 16957 + ... + 20923.

It is an arithmetic number, because the mean of its divisors is an integer number (6582912).

Almost surely, 275134980 is an apocalyptic number.

It is an amenable number.

75134980 is an abundant number, since it is smaller than the sum of its proper divisors (82854908).

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

75134980 is a wasteful number, since it uses less digits than its factorization.

75134980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4923 (or 4921 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 75134980 is about 8668.0436085659. The cubic root of 75134980 is about 421.9691733432.

The spelling of 75134980 in words is "seventy-five million, one hundred thirty-four thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 947 1894 3788 3967 4735 7934 9470 15868 18940 19835 39670 79340 3756749 7513498 15026996 18783745 37567490 75134980