Search a number
-
+
85177848 = 23373771193
BaseRepresentation
bin1010001001110…
…11010111111000
312221021111001010
411010323113320
5133301142343
612241353520
72052666630
oct504732770
9187244033
1085177848
1144098418
12246388a0
13148540c2
14b4536c0
157727d33
hex513b5f8

85177848 has 128 divisors (see below), whose sum is σ = 254776320. Its totient is φ = 23224320.

The previous prime is 85177847. The next prime is 85177867. The reversal of 85177848 is 84877158.

It is a super-2 number, since 2×851778482 = 14510531579822208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85177797 and 85177806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85177847) 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, 441240 + ... + 441432.

It is an arithmetic number, because the mean of its divisors is an integer number (1990440).

Almost surely, 285177848 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 85177848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127388160).

85177848 is an abundant number, since it is smaller than the sum of its proper divisors (169598472).

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

85177848 is a wasteful number, since it uses less digits than its factorization.

85177848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 313 counting only the distinct ones).

The product of its digits is 501760, while the sum is 48.

The square root of 85177848 is about 9229.1845793656. The cubic root of 85177848 is about 439.9894074585.

The spelling of 85177848 in words is "eighty-five million, one hundred seventy-seven thousand, eight hundred forty-eight".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 37 42 56 71 74 84 111 142 148 168 193 213 222 259 284 296 386 426 444 497 518 568 579 772 777 852 888 994 1036 1158 1351 1491 1544 1554 1704 1988 2072 2316 2627 2702 2982 3108 3976 4053 4632 5254 5404 5964 6216 7141 7881 8106 10508 10808 11928 13703 14282 15762 16212 18389 21016 21423 27406 28564 31524 32424 36778 41109 42846 49987 54812 55167 57128 63048 73556 82218 85692 95921 99974 109624 110334 147112 149961 164436 171384 191842 199948 220668 287763 299922 328872 383684 399896 441336 507011 575526 599844 767368 1014022 1151052 1199688 1521033 2028044 2302104 3042066 3549077 4056088 6084132 7098154 10647231 12168264 14196308 21294462 28392616 42588924 85177848