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76280568 = 23371353659
BaseRepresentation
bin1001000101111…
…11001011111000
312022112110021020
410202333023320
5124011434233
611322542440
71614242220
oct442771370
9168473236
1076280568
113a0707a1
1221667a20
1312a5a440
14a1b9080
156a6b9b3
hex48bf2f8

76280568 has 128 divisors (see below), whose sum is σ = 239500800. Its totient is φ = 19708416.

The previous prime is 76280563. The next prime is 76280579. The reversal of 76280568 is 86508267.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76280563) 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, 115423 + ... + 116081.

It is an arithmetic number, because the mean of its divisors is an integer number (1871100).

Almost surely, 276280568 is an apocalyptic number.

76280568 is a gapful number since it is divisible by the number (78) 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 76280568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119750400).

76280568 is an abundant number, since it is smaller than the sum of its proper divisors (163220232).

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

76280568 is a wasteful number, since it uses less digits than its factorization.

76280568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741 (or 737 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 76280568 is about 8733.8747414879. The cubic root of 76280568 is about 424.1029624164.

The spelling of 76280568 in words is "seventy-six million, two hundred eighty thousand, five hundred sixty-eight".

Divisors: 1 2 3 4 6 7 8 12 13 14 21 24 26 28 39 42 52 53 56 78 84 91 104 106 156 159 168 182 212 273 312 318 364 371 424 546 636 659 689 728 742 1092 1113 1272 1318 1378 1484 1977 2067 2184 2226 2636 2756 2968 3954 4134 4452 4613 4823 5272 5512 7908 8268 8567 8904 9226 9646 13839 14469 15816 16536 17134 18452 19292 25701 27678 28938 34268 34927 36904 38584 51402 55356 57876 59969 68536 69854 102804 104781 110712 115752 119938 139708 179907 205608 209562 239876 244489 279416 359814 419124 454051 479752 488978 719628 733467 838248 908102 977956 1362153 1439256 1466934 1816204 1955912 2724306 2933868 3178357 3632408 5448612 5867736 6356714 9535071 10897224 12713428 19070142 25426856 38140284 76280568