Search a number
-
+
487281273 = 31974311913
BaseRepresentation
bin11101000010110…
…101001001111001
31020221220110020120
4131002311021321
51444221000043
6120204043453
715034552053
oct3502651171
91227813216
10487281273
1123006a6a6
12117233589
1379c50c1b
1448a048d3
152cba4983
hex1d0b5279

487281273 has 16 divisors (see below), whose sum is σ = 654863616. Its totient is φ = 322286720.

The previous prime is 487281271. The next prime is 487281293. The reversal of 487281273 is 372182784.

It is a cyclic number.

It is not a de Polignac number, because 487281273 - 21 = 487281271 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (487281271) 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, 253765 + ... + 255677.

It is an arithmetic number, because the mean of its divisors is an integer number (40928976).

Almost surely, 2487281273 is an apocalyptic number.

It is an amenable number.

487281273 is a deficient number, since it is larger than the sum of its proper divisors (167582343).

487281273 is a wasteful number, since it uses less digits than its factorization.

487281273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544.

The product of its digits is 150528, while the sum is 42.

The square root of 487281273 is about 22074.4484189300. The cubic root of 487281273 is about 786.9127348539.

The spelling of 487281273 in words is "four hundred eighty-seven million, two hundred eighty-one thousand, two hundred seventy-three".

Divisors: 1 3 197 431 591 1293 1913 5739 84907 254721 376861 824503 1130583 2473509 162427091 487281273