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2005213344 = 253118717597
BaseRepresentation
bin111011110000101…
…0010000010100000
312011202011101120220
41313201102002200
513101313311334
6530550403040
7100456014021
oct16741220240
95152141526
102005213344
11939988512
1247b660480
1325c581294
14150454c48
15bb092449
hex778520a0

2005213344 has 48 divisors (see below), whose sum is σ = 5268418848. Its totient is φ = 667803392.

The previous prime is 2005213339. The next prime is 2005213349. The reversal of 2005213344 is 4433125002.

It is an interprime number because it is at equal distance from previous prime (2005213339) and next prime (2005213349).

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-3 number, since 3×20052133443 (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (2005213349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105154 + ... + 122750.

It is an arithmetic number, because the mean of its divisors is an integer number (109758726).

Almost surely, 22005213344 is an apocalyptic number.

2005213344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2005213344 is an abundant number, since it is smaller than the sum of its proper divisors (3263205504).

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

2005213344 is a wasteful number, since it uses less digits than its factorization.

2005213344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18797 (or 18789 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 2005213344 is about 44779.6085735461. The cubic root of 2005213344 is about 1261.0148337071.

Adding to 2005213344 its reverse (4433125002), we get a palindrome (6438338346).

The spelling of 2005213344 in words is "two billion, five million, two hundred thirteen thousand, three hundred forty-four".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 1187 2374 3561 4748 7122 9496 14244 17597 18992 28488 35194 37984 52791 56976 70388 105582 113952 140776 211164 281552 422328 563104 844656 1689312 20887639 41775278 62662917 83550556 125325834 167101112 250651668 334202224 501303336 668404448 1002606672 2005213344