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64824712484 = 2272893716161
BaseRepresentation
bin111100010111110110…
…101001110100100100
320012022202010121001012
4330113312221310210
52030230111244414
645440254321352
74453262651600
oct742766516444
9205282117035
1064824712484
1125545950a54
12106917b9258
1361611a4b4c
1431cd566500
151a460d233e
hexf17da9d24

64824712484 has 36 divisors (see below), whose sum is σ = 133447377420. Its totient is φ = 27469854720.

The previous prime is 64824712483. The next prime is 64824712493. The reversal of 64824712484 is 48421742846.

It can be written as a sum of positive squares in 2 ways, for example, as 9472739584 + 55351972900 = 97328^2 + 235270^2 .

It is not an unprimeable number, because it can be changed into a prime (64824712483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1840637 + ... + 1875524.

It is an arithmetic number, because the mean of its divisors is an integer number (3706871595).

Almost surely, 264824712484 is an apocalyptic number.

It is an amenable number.

64824712484 is an abundant number, since it is smaller than the sum of its proper divisors (68622664936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64824712484 is a wasteful number, since it uses less digits than its factorization.

64824712484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3716268 (or 3716259 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 50.

The spelling of 64824712484 in words is "sixty-four billion, eight hundred twenty-four million, seven hundred twelve thousand, four hundred eighty-four".

Divisors: 1 2 4 7 14 28 49 89 98 178 196 356 623 1246 2492 4361 8722 17444 3716161 7432322 14864644 26013127 52026254 104052508 182091889 330738329 364183778 661476658 728367556 1322953316 2315168303 4630336606 9260673212 16206178121 32412356242 64824712484