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485720491 = 6125730983
BaseRepresentation
bin11100111100111…
…000000110101011
31020211222011020211
4130330320012223
51443321023431
6120110401551
715015361504
oct3474700653
91224864224
10485720491
1122a1a3aa3
121168002b7
1379825699
1448719bab
152c9972b1
hex1cf381ab

485720491 has 8 divisors (see below), whose sum is σ = 495620064. Its totient is φ = 475883520.

The previous prime is 485720479. The next prime is 485720527. The reversal of 485720491 is 194027584.

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 485720491 - 215 = 485687723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (485720471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186 + ... + 31168.

It is an arithmetic number, because the mean of its divisors is an integer number (61952508).

Almost surely, 2485720491 is an apocalyptic number.

485720491 is a deficient number, since it is larger than the sum of its proper divisors (9899573).

485720491 is a wasteful number, since it uses less digits than its factorization.

485720491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31301.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 485720491 is about 22039.0673804497. The cubic root of 485720491 is about 786.0716649127.

The spelling of 485720491 in words is "four hundred eighty-five million, seven hundred twenty thousand, four hundred ninety-one".

Divisors: 1 61 257 15677 30983 1889963 7962631 485720491