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284461793149 = 2557111248257
BaseRepresentation
bin1000010001110110011…
…11100111111101111101
31000012020122001100001111
410020323033213331331
514130034204340044
6334402511242021
726360141226622
oct4107317477575
91005218040044
10284461793149
11aa7042a2536
1247169819311
1320a94941181
14daa765c349
1575ed4d5b34
hex423b3e7f7d

284461793149 has 4 divisors (see below), whose sum is σ = 284573043964. Its totient is φ = 284350542336.

The previous prime is 284461793131. The next prime is 284461793171. The reversal of 284461793149 is 941397164482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 941397164482 = 2470698582241.

It can be written as a sum of positive squares in 2 ways, for example, as 79872933924 + 204588859225 = 282618^2 + 452315^2 .

It is a cyclic number.

It is not a de Polignac number, because 284461793149 - 211 = 284461791101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 284461793093 and 284461793102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284461797149) 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, 55621572 + ... + 55626685.

It is an arithmetic number, because the mean of its divisors is an integer number (71143260991).

Almost surely, 2284461793149 is an apocalyptic number.

It is an amenable number.

284461793149 is a deficient number, since it is larger than the sum of its proper divisors (111250815).

284461793149 is a wasteful number, since it uses less digits than its factorization.

284461793149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111250814.

The product of its digits is 10450944, while the sum is 58.

The spelling of 284461793149 in words is "two hundred eighty-four billion, four hundred sixty-one million, seven hundred ninety-three thousand, one hundred forty-nine".

Divisors: 1 2557 111248257 284461793149