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728764879 is a prime number
BaseRepresentation
bin101011011100000…
…001000111001111
31212210022002110211
4223130001013033
52443030434004
6200151543251
724026253643
oct5334010717
91783262424
10728764879
11344406927
1218408ab27
13b7ca112b
146cb04c23
1543ea5504
hex2b7011cf

728764879 has 2 divisors, whose sum is σ = 728764880. Its totient is φ = 728764878.

The previous prime is 728764871. The next prime is 728764919. The reversal of 728764879 is 978467827.

728764879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 728764879 - 23 = 728764871 is a prime.

It is a super-3 number, since 3×7287648793 (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728764871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364382439 + 364382440.

It is an arithmetic number, because the mean of its divisors is an integer number (364382440).

Almost surely, 2728764879 is an apocalyptic number.

728764879 is a deficient number, since it is larger than the sum of its proper divisors (1).

728764879 is an equidigital number, since it uses as much as digits as its factorization.

728764879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9483264, while the sum is 58.

The square root of 728764879 is about 26995.6455562744. The cubic root of 728764879 is about 899.9032319827.

The spelling of 728764879 in words is "seven hundred twenty-eight million, seven hundred sixty-four thousand, eight hundred seventy-nine".