Search a number
-
+
80278287208 = 23723147140557
BaseRepresentation
bin100101011000011110…
…1010111001101101000
321200012201202112021121
41022300331113031220
52303402220142313
6100513534145024
75541241116400
oct1126075271550
9250181675247
1080278287208
1131056000409
1213685052174
13775499c9c2
143c57ad9800
15214cb3e28d
hex12b0f57368

80278287208 has 96 divisors (see below), whose sum is σ = 184592010240. Its totient is φ = 32586503040.

The previous prime is 80278287191. The next prime is 80278287223.

80278287208 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 500866 + ... + 641422.

It is an arithmetic number, because the mean of its divisors is an integer number (1922833440).

Almost surely, 280278287208 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 80278287208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92296005120).

80278287208 is an abundant number, since it is smaller than the sum of its proper divisors (104313723032).

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

80278287208 is a wasteful number, since it uses less digits than its factorization.

80278287208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140655 (or 140644 counting only the distinct ones).

The product of its (nonzero) digits is 1605632, while the sum is 52.

The spelling of 80278287208 in words is "eighty billion, two hundred seventy-eight million, two hundred eighty-seven thousand, two hundred eight".

Divisors: 1 2 4 7 8 14 28 31 47 49 56 62 94 98 124 188 196 217 248 329 376 392 434 658 868 1316 1457 1519 1736 2303 2632 2914 3038 4606 5828 6076 9212 10199 11656 12152 18424 20398 40796 71393 81592 140557 142786 281114 285572 562228 571144 983899 1124456 1967798 3935596 4357267 6606179 6887293 7871192 8714534 13212358 13774586 17429068 26424716 27549172 30500869 34858136 46243253 52849432 55098344 61001738 92486506 122003476 184973012 204791549 213506083 244006952 323702771 369946024 409583098 427012166 647405542 819166196 854024332 1294811084 1433540843 1638332392 1708048664 2589622168 2867081686 5734163372 10034785901 11468326744 20069571802 40139143604 80278287208