[go: up one dir, main page]

Search a number
-
+
68626280 = 23517432347
BaseRepresentation
bin1000001011100…
…10011101101000
311210010120120002
410011302131220
5120032020110
610450522132
71462212422
oct405623550
9153116502
1068626280
1135812a38
121ab96348
13112aa488
149185812
156058aa5
hex4172768

68626280 has 64 divisors (see below), whose sum is σ = 167365440. Its totient is φ = 25224192.

The previous prime is 68626279. The next prime is 68626289. The reversal of 68626280 is 8262686.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (68626289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28067 + ... + 30413.

It is an arithmetic number, because the mean of its divisors is an integer number (2615085).

Almost surely, 268626280 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 68626280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83682720).

68626280 is an abundant number, since it is smaller than the sum of its proper divisors (98739160).

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

68626280 is a wasteful number, since it uses less digits than its factorization.

68626280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2418 (or 2414 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 68626280 is about 8284.0980197002. The cubic root of 68626280 is about 409.4147509523.

The spelling of 68626280 in words is "sixty-eight million, six hundred twenty-six thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 17 20 34 40 43 68 85 86 136 170 172 215 340 344 430 680 731 860 1462 1720 2347 2924 3655 4694 5848 7310 9388 11735 14620 18776 23470 29240 39899 46940 79798 93880 100921 159596 199495 201842 319192 398990 403684 504605 797980 807368 1009210 1595960 1715657 2018420 3431314 4036840 6862628 8578285 13725256 17156570 34313140 68626280