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75131480 = 2351878287
BaseRepresentation
bin1000111101001…
…10101001011000
312020101002000102
410132212221120
5123213201410
611242154532
71601415134
oct436465130
9166332012
1075131480
1139456436
12211b2a48
13127473c8
149d9a3c4
1568e12a5
hex47a6a58

75131480 has 16 divisors (see below), whose sum is σ = 169045920. Its totient is φ = 30052576.

The previous prime is 75131477. The next prime is 75131503. The reversal of 75131480 is 8413157.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 939104 + ... + 939183.

It is an arithmetic number, because the mean of its divisors is an integer number (10565370).

Almost surely, 275131480 is an apocalyptic number.

It is an amenable number.

75131480 is an abundant number, since it is smaller than the sum of its proper divisors (93914440).

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

75131480 is a wasteful number, since it uses less digits than its factorization.

75131480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878298 (or 1878294 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 75131480 is about 8667.8417152138. The cubic root of 75131480 is about 421.9626210687.

The spelling of 75131480 in words is "seventy-five million, one hundred thirty-one thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 1878287 3756574 7513148 9391435 15026296 18782870 37565740 75131480