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75001668 = 2237892877
BaseRepresentation
bin1000111100001…
…10111101000100
312020010110221120
410132012331010
5123200023133
611235313540
71600334520
oct436067504
9166113846
1075001668
1139377955
122114b8b0
13127002b1
149d64d80
1568b7ab3
hex4786f44

75001668 has 24 divisors (see below), whose sum is σ = 200004672. Its totient is φ = 21429024.

The previous prime is 75001657. The next prime is 75001673. The reversal of 75001668 is 86610057.

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 7 ways as a sum of consecutive naturals, for example, 446355 + ... + 446522.

It is an arithmetic number, because the mean of its divisors is an integer number (8333528).

Almost surely, 275001668 is an apocalyptic number.

It is an amenable number.

75001668 is an abundant number, since it is smaller than the sum of its proper divisors (125003004).

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

75001668 is a wasteful number, since it uses less digits than its factorization.

75001668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892891 (or 892889 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 75001668 is about 8660.3503393339. The cubic root of 75001668 is about 421.7194589514.

The spelling of 75001668 in words is "seventy-five million, one thousand, six hundred sixty-eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 892877 1785754 2678631 3571508 5357262 6250139 10714524 12500278 18750417 25000556 37500834 75001668