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528972879 = 3227776759
BaseRepresentation
bin11111100001110…
…111110001001111
31100212100121101010
4133201313301033
52040404113004
6124253420303
716052123661
oct3741676117
91325317333
10528972879
11251656176
1212919a693
138578a706
1450378531
153168ca89
hex1f877c4f

528972879 has 8 divisors (see below), whose sum is σ = 708405120. Its totient is φ = 351094616.

The previous prime is 528972869. The next prime is 528972887. The reversal of 528972879 is 978279825.

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 528972879 - 211 = 528970831 is a prime.

It is a super-3 number, since 3×5289728793 (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528972859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387699 + ... + 389060.

It is an arithmetic number, because the mean of its divisors is an integer number (88550640).

Almost surely, 2528972879 is an apocalyptic number.

528972879 is a deficient number, since it is larger than the sum of its proper divisors (179432241).

528972879 is a wasteful number, since it uses less digits than its factorization.

528972879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776989.

The product of its digits is 5080320, while the sum is 57.

The square root of 528972879 is about 22999.4104054865. The cubic root of 528972879 is about 808.7441184226.

The spelling of 528972879 in words is "five hundred twenty-eight million, nine hundred seventy-two thousand, eight hundred seventy-nine".

Divisors: 1 3 227 681 776759 2330277 176324293 528972879