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64064260 = 22513793119
BaseRepresentation
bin1111010001100…
…0101100000100
311110112210122101
43310120230010
5112400024020
610205041444
71405352161
oct364305404
9143483571
1064064260
1133187477
1219556284
1310370b60
148719068
15595700a
hex3d18b04

64064260 has 48 divisors (see below), whose sum is σ = 146764800. Its totient is φ = 23347584.

The previous prime is 64064251. The next prime is 64064293. The reversal of 64064260 is 6246046.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18981 + ... + 22099.

It is an arithmetic number, because the mean of its divisors is an integer number (3057600).

Almost surely, 264064260 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64064260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73382400).

64064260 is an abundant number, since it is smaller than the sum of its proper divisors (82700540).

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

64064260 is a wasteful number, since it uses less digits than its factorization.

64064260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220 (or 3218 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 64064260 is about 8004.0152423643. The cubic root of 64064260 is about 400.1338302187.

The spelling of 64064260 in words is "sixty-four million, sixty-four thousand, two hundred sixty".

Divisors: 1 2 4 5 10 13 20 26 52 65 79 130 158 260 316 395 790 1027 1580 2054 3119 4108 5135 6238 10270 12476 15595 20540 31190 40547 62380 81094 162188 202735 246401 405470 492802 810940 985604 1232005 2464010 3203213 4928020 6406426 12812852 16016065 32032130 64064260