Base | Representation |
---|---|
bin | 101111100110101100… |
… | …0100111111001100100 |
3 | 100202212120211201000110 |
4 | 1133031120213321210 |
5 | 3133331342010342 |
6 | 114544104213020 |
7 | 10246232635305 |
oct | 1371530477144 |
9 | 322776751013 |
10 | 102230031972 |
11 | 3a3a0208132 |
12 | 1799076a170 |
13 | 98428277a3 |
14 | 4d3b2b87ac |
15 | 29d4dd9c9c |
hex | 17cd627e64 |
102230031972 has 48 divisors (see below), whose sum is σ = 244345758272. Its totient is φ = 33248517120.
The previous prime is 102230031941. The next prime is 102230031973. The reversal of 102230031972 is 279130032201.
It is a super-2 number, since 2×1022300319722 (a number of 23 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (102230031973) 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, 377772 + ... + 589212.
Almost surely, 2102230031972 is an apocalyptic number.
102230031972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
102230031972 is an abundant number, since it is smaller than the sum of its proper divisors (142115726300).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
102230031972 is a wasteful number, since it uses less digits than its factorization.
102230031972 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 212428 (or 212426 counting only the distinct ones).
The product of its (nonzero) digits is 4536, while the sum is 30.
The spelling of 102230031972 in words is "one hundred two billion, two hundred thirty million, thirty-one thousand, nine hundred seventy-two".
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