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75212000 = 255318803
BaseRepresentation
bin1000111101110…
…10010011100000
312020112011110122
410132322103200
5123223241000
611244015412
71602201653
oct436722340
9166464418
1075212000
1139500986
1221231568
1312774c56
149dbb89a
15690a085
hex47ba4e0

75212000 has 48 divisors (see below), whose sum is σ = 184805712. Its totient is φ = 30083200.

The previous prime is 75211991. The next prime is 75212017. The reversal of 75212000 is 21257.

It is a self number, because there is not a number n which added to its sum of digits gives 75212000.

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 7 ways as a sum of consecutive naturals, for example, 5402 + ... + 13401.

It is an arithmetic number, because the mean of its divisors is an integer number (3850119).

Almost surely, 275212000 is an apocalyptic number.

It is an amenable number.

75212000 is an abundant number, since it is smaller than the sum of its proper divisors (109593712).

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

75212000 is a wasteful number, since it uses less digits than its factorization.

75212000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18828 (or 18810 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 75212000 is about 8672.4852262774. The cubic root of 75212000 is about 422.1133093453.

Adding to 75212000 its reverse (21257), we get a palindrome (75233257).

The spelling of 75212000 in words is "seventy-five million, two hundred twelve thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 125 160 200 250 400 500 800 1000 2000 4000 18803 37606 75212 94015 150424 188030 300848 376060 470075 601696 752120 940150 1504240 1880300 2350375 3008480 3760600 4700750 7521200 9401500 15042400 18803000 37606000 75212000