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80259047 = 1173127787
BaseRepresentation
bin1001100100010…
…10011111100111
312121000120201022
410302022133213
5131021242142
611544121355
71663122251
oct462123747
9177016638
1080259047
11413388a0
1222a6625b
131382127b
14a932cd1
1570a56d2
hex4c8a7e7

80259047 has 16 divisors (see below), whose sum is σ = 89567232. Its totient is φ = 71305920.

The previous prime is 80258987. The next prime is 80259071. The reversal of 80259047 is 74095208.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 80259047 - 28 = 80258791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80258998 and 80259016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80259847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101588 + ... + 102374.

It is an arithmetic number, because the mean of its divisors is an integer number (5597952).

Almost surely, 280259047 is an apocalyptic number.

80259047 is a deficient number, since it is larger than the sum of its proper divisors (9308185).

80259047 is a wasteful number, since it uses less digits than its factorization.

80259047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 80259047 is about 8958.7413736529. The cubic root of 80259047 is about 431.3515201167.

The spelling of 80259047 in words is "eighty million, two hundred fifty-nine thousand, forty-seven".

Divisors: 1 11 73 127 787 803 1397 8657 9271 57451 99949 101981 631961 1099439 7296277 80259047