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64345260 = 22357236661
BaseRepresentation
bin1111010101110…
…1010010101100
311111002002002210
43311131102230
5112433022020
610215050420
71410632340
oct365352254
9144062083
1064345260
1133359601
1219670a10
131043ba25
14878d620
1559b03e0
hex3d5d4ac

64345260 has 96 divisors (see below), whose sum is σ = 214889472. Its totient is φ = 14065920.

The previous prime is 64345249. The next prime is 64345261. The reversal of 64345260 is 6254346.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (64345261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6330 + ... + 12990.

It is an arithmetic number, because the mean of its divisors is an integer number (2238432).

Almost surely, 264345260 is an apocalyptic number.

64345260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64345260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107444736).

64345260 is an abundant number, since it is smaller than the sum of its proper divisors (150544212).

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

64345260 is a wasteful number, since it uses less digits than its factorization.

64345260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6703 (or 6701 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 64345260 is about 8021.5497255830. The cubic root of 64345260 is about 400.7180020781.

The spelling of 64345260 in words is "sixty-four million, three hundred forty-five thousand, two hundred sixty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 23 28 30 35 42 46 60 69 70 84 92 105 115 138 140 161 210 230 276 322 345 420 460 483 644 690 805 966 1380 1610 1932 2415 3220 4830 6661 9660 13322 19983 26644 33305 39966 46627 66610 79932 93254 99915 133220 139881 153203 186508 199830 233135 279762 306406 399660 459609 466270 559524 612812 699405 766015 919218 932540 1072421 1398810 1532030 1838436 2144842 2298045 2797620 3064060 3217263 4289684 4596090 5362105 6434526 9192180 10724210 12869052 16086315 21448420 32172630 64345260