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284081538049 = 5329932
BaseRepresentation
bin1000010001001001001…
…01000100010000000001
31000011021010112101010021
410020210211010100001
514123244333204144
6334301045133441
726344543142311
oct4104445042001
91004233471107
10284081538049
11aa529693221
12470823ba281
1320a33c23b5a
14da6cd57441
1575c9e22884
hex4224944401

284081538049 has 3 divisors (see below), whose sum is σ = 284082071043. Its totient is φ = 284081005056.

The previous prime is 284081538031. The next prime is 284081538107. The reversal of 284081538049 is 940835180482.

The square root of 284081538049 is 532993.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 3215457025 + 280866081024 = 56705^2 + 529968^2 .

It is not a de Polignac number, because 284081538049 - 225 = 284047983617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 284081537987 and 284081538005.

It is not an unprimeable number, because it can be changed into a prime (284081536049) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 266497 + ... + 799489.

It is an arithmetic number, because the mean of its divisors is an integer number (94694023681).

Almost surely, 2284081538049 is an apocalyptic number.

284081538049 is the 532993-rd square number.

284081538049 is the 266497-th centered octagonal number.

It is an amenable number.

284081538049 is a deficient number, since it is larger than the sum of its proper divisors (532994).

284081538049 is an frugal number, since it uses more digits than its factorization.

284081538049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065986 (or 532993 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 52.

The spelling of 284081538049 in words is "two hundred eighty-four billion, eighty-one million, five hundred thirty-eight thousand, forty-nine".

Divisors: 1 532993 284081538049