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64288005 = 3510314157
BaseRepresentation
bin1111010100111…
…1010100000101
311110222011120020
43311033110011
5112424204010
610213525353
71410303405
oct365172405
9143864506
1064288005
113331a591
1219643859
131041b952
148776805
15599d470
hex3d4f505

64288005 has 16 divisors (see below), whose sum is σ = 102985344. Its totient is φ = 34245440.

The previous prime is 64287997. The next prime is 64288031. The reversal of 64288005 is 50088246.

It is not a de Polignac number, because 64288005 - 23 = 64287997 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13387 + ... + 17543.

It is an arithmetic number, because the mean of its divisors is an integer number (6436584).

Almost surely, 264288005 is an apocalyptic number.

It is an amenable number.

64288005 is a deficient number, since it is larger than the sum of its proper divisors (38697339).

64288005 is a wasteful number, since it uses less digits than its factorization.

64288005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5196.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 64288005 is about 8017.9801072340. The cubic root of 64288005 is about 400.5991126288.

The spelling of 64288005 in words is "sixty-four million, two hundred eighty-eight thousand, five".

Divisors: 1 3 5 15 1031 3093 4157 5155 12471 15465 20785 62355 4285867 12857601 21429335 64288005