Search a number
-
+
285768703480 = 23513549555199
BaseRepresentation
bin1000010100010010010…
…01000101110111111000
31000022121201020020222211
410022021021011313320
514140223242002410
6335140315024504
726434420621051
oct4121111056770
91008551206884
10285768703480
11100214a8a617
124747343b134
1320c426285b0
14db8d05b728
1576780dd68a
hex4289245df8

285768703480 has 32 divisors (see below), whose sum is σ = 692439552000. Its totient is φ = 105514598016.

The previous prime is 285768703469. The next prime is 285768703483. The reversal of 285768703480 is 84307867582.

It is a super-2 number, since 2×2857687034802 (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285768703483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274777080 + ... + 274778119.

It is an arithmetic number, because the mean of its divisors is an integer number (21638736000).

Almost surely, 2285768703480 is an apocalyptic number.

285768703480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285768703480 is an abundant number, since it is smaller than the sum of its proper divisors (406670848520).

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

285768703480 is a wasteful number, since it uses less digits than its factorization.

285768703480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549555223 (or 549555219 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 58.

The spelling of 285768703480 in words is "two hundred eighty-five billion, seven hundred sixty-eight million, seven hundred three thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 520 549555199 1099110398 2198220796 2747775995 4396441592 5495551990 7144217587 10991103980 14288435174 21982207960 28576870348 35721087935 57153740696 71442175870 142884351740 285768703480