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75872069 = 713833759
BaseRepresentation
bin1001000010110…
…11011101000101
312021202200220122
410201123131011
5123410401234
611310111325
71610621240
oct441333505
9167680818
1075872069
1139911899
12214ab545
1312946520
14a110257
1569da92e
hex485b745

75872069 has 8 divisors (see below), whose sum is σ = 93381120. Its totient is φ = 60030576.

The previous prime is 75872063. The next prime is 75872077. The reversal of 75872069 is 96027857.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75872069 - 220 = 74823493 is a prime.

It is a super-2 number, since 2×758720692 = 11513141708681522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75872063) 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, 416789 + ... + 416970.

It is an arithmetic number, because the mean of its divisors is an integer number (11672640).

Almost surely, 275872069 is an apocalyptic number.

It is an amenable number.

75872069 is a deficient number, since it is larger than the sum of its proper divisors (17509051).

75872069 is a wasteful number, since it uses less digits than its factorization.

75872069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833779.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 75872069 is about 8710.4574506739. The cubic root of 75872069 is about 423.3445525096.

It can be divided in two parts, 758 and 72069, that added together give a palindrome (72827).

The spelling of 75872069 in words is "seventy-five million, eight hundred seventy-two thousand, sixty-nine".

Divisors: 1 7 13 91 833759 5836313 10838867 75872069