Base | Representation |
---|---|
bin | 10111110100111001… |
… | …11111100001101110 |
3 | 1020000111002202000112 |
4 | 23322130333201232 |
5 | 202144202320310 |
6 | 5513153300022 |
7 | 631664556521 |
oct | 137234774156 |
9 | 36014082015 |
10 | 12791838830 |
11 | 5474728931 |
12 | 258bb64612 |
13 | 128b21ab04 |
14 | 894c60bb8 |
15 | 4ed034705 |
hex | 2fa73f86e |
12791838830 has 32 divisors (see below), whose sum is σ = 23262280704. Its totient is φ = 5064133536.
The previous prime is 12791838823. The next prime is 12791838833. The reversal of 12791838830 is 3883819721.
It is a super-2 number, since 2×127918388302 (a number of 21 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12791838833) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3012689 + ... + 3016931.
It is an arithmetic number, because the mean of its divisors is an integer number (726946272).
Almost surely, 212791838830 is an apocalyptic number.
12791838830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
12791838830 is a deficient number, since it is larger than the sum of its proper divisors (10470441874).
12791838830 is a wasteful number, since it uses less digits than its factorization.
12791838830 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7280.
The product of its (nonzero) digits is 580608, while the sum is 50.
The spelling of 12791838830 in words is "twelve billion, seven hundred ninety-one million, eight hundred thirty-eight thousand, eight hundred thirty".
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