Base | Representation |
---|---|
bin | 110010001101001… |
… | …111011101001010 |
3 | 2011200222220020200 |
4 | 302031033131022 |
5 | 3211114110403 |
6 | 215330033030 |
7 | 26605463235 |
oct | 6215173512 |
9 | 2150886220 |
10 | 842331978 |
11 | 3a2524534 |
12 | 1b6118776 |
13 | 105684cb7 |
14 | 7dc2841c |
15 | 4de39ca3 |
hex | 3234f74a |
842331978 has 48 divisors (see below), whose sum is σ = 1924072800. Its totient is φ = 265589280.
The previous prime is 842331961. The next prime is 842331989. The reversal of 842331978 is 879133248.
It is a super-3 number, since 3×8423319783 (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 282033 + ... + 285003.
It is an arithmetic number, because the mean of its divisors is an integer number (40084850).
Almost surely, 2842331978 is an apocalyptic number.
842331978 is an abundant number, since it is smaller than the sum of its proper divisors (1081740822).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
842331978 is a wasteful number, since it uses less digits than its factorization.
842331978 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3827 (or 3824 counting only the distinct ones).
The product of its digits is 290304, while the sum is 45.
The square root of 842331978 is about 29022.9560520633. The cubic root of 842331978 is about 944.4111288835.
It can be divided in two parts, 8423 and 31978, that added together give a square (40401 = 2012).
The spelling of 842331978 in words is "eight hundred forty-two million, three hundred thirty-one thousand, nine hundred seventy-eight".
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