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487304761 = 1925647619
BaseRepresentation
bin11101000010111…
…010111000111001
31020221221122110111
4131002322320321
51444222223021
6120204344321
715035010406
oct3502727071
91227848414
10487304761
11230086309
121172450a1
1379c5b818
1448a0d2ad
152cbab8e1
hex1d0bae39

487304761 has 4 divisors (see below), whose sum is σ = 512952400. Its totient is φ = 461657124.

The previous prime is 487304747. The next prime is 487304801. The reversal of 487304761 is 167403784.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 487304761 - 211 = 487302713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (487307761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12823791 + ... + 12823828.

It is an arithmetic number, because the mean of its divisors is an integer number (128238100).

Almost surely, 2487304761 is an apocalyptic number.

It is an amenable number.

487304761 is a deficient number, since it is larger than the sum of its proper divisors (25647639).

487304761 is a wasteful number, since it uses less digits than its factorization.

487304761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25647638.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 487304761 is about 22074.9804303424. The cubic root of 487304761 is about 786.9253782766.

The spelling of 487304761 in words is "four hundred eighty-seven million, three hundred four thousand, seven hundred sixty-one".

Divisors: 1 19 25647619 487304761