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286031748920 = 23541174409603
BaseRepresentation
bin1000010100110001101…
…00100001111100111000
31000100022001012100111112
410022120310201330320
514141243111431140
6335222353015452
726444063515301
oct4123064417470
91010261170445
10286031748920
1110033a513545
1247527554588
1320c84c87a98
14dbb5d717a8
15769124cc65
hex4298d21f38

286031748920 has 32 divisors (see below), whose sum is σ = 659268303120. Its totient is φ = 111622145280.

The previous prime is 286031748917. The next prime is 286031748929. The reversal of 286031748920 is 29847130682.

It is a super-2 number, since 2×2860317489202 (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286031748929) 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, 87203162 + ... + 87206441.

Almost surely, 2286031748920 is an apocalyptic number.

286031748920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

286031748920 is an abundant number, since it is smaller than the sum of its proper divisors (373236554200).

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

286031748920 is a wasteful number, since it uses less digits than its factorization.

286031748920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174409655 (or 174409651 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 286031748920 in words is "two hundred eighty-six billion, thirty-one million, seven hundred forty-eight thousand, nine hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 41 82 164 205 328 410 820 1640 174409603 348819206 697638412 872048015 1395276824 1744096030 3488192060 6976384120 7150793723 14301587446 28603174892 35753968615 57206349784 71507937230 143015874460 286031748920