Base | Representation |
---|---|
bin | 1100001010000… |
… | …01011011011000 |
3 | 21002220010002000 |
4 | 12011001123120 |
5 | 202101323424 |
6 | 14041441000 |
7 | 2345546250 |
oct | 605013330 |
9 | 232803060 |
10 | 101979864 |
11 | 52623a88 |
12 | 2a1a0160 |
13 | 18187a1c |
14 | d788960 |
15 | 8e463c9 |
hex | 61416d8 |
101979864 has 64 divisors (see below), whose sum is σ = 323750400. Its totient is φ = 29136672.
The previous prime is 101979827. The next prime is 101979869. The reversal of 101979864 is 468979101.
It is a happy number.
It is a super-2 number, since 2×1019798642 = 20799785322916992, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (101979869) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32212 + ... + 35235.
It is an arithmetic number, because the mean of its divisors is an integer number (5058600).
Almost surely, 2101979864 is an apocalyptic number.
101979864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.
It is an amenable number.
101979864 is an abundant number, since it is smaller than the sum of its proper divisors (221770536).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
101979864 is a wasteful number, since it uses less digits than its factorization.
101979864 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 67469 (or 67459 counting only the distinct ones).
The product of its (nonzero) digits is 108864, while the sum is 45.
The square root of 101979864 is about 10098.5080086120. The cubic root of 101979864 is about 467.2021250568.
The spelling of 101979864 in words is "one hundred one million, nine hundred seventy-nine thousand, eight hundred sixty-four".
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