Base | Representation |
---|---|
bin | 110001001011… |
… | …0111010101100 |
3 | 1210111221222020 |
4 | 1202112322230 |
5 | 23100041410 |
6 | 2320350140 |
7 | 432105645 |
oct | 142267254 |
9 | 53457866 |
10 | 25783980 |
11 | 13610982 |
12 | 8775350 |
13 | 5459cc1 |
14 | 35d26cc |
15 | 23e4a70 |
hex | 1896eac |
25783980 has 24 divisors (see below), whose sum is σ = 72195312. Its totient is φ = 6875712.
The previous prime is 25783949. The next prime is 25783981. The reversal of 25783980 is 8938752.
It is not an unprimeable number, because it can be changed into a prime (25783981) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214807 + ... + 214926.
It is an arithmetic number, because the mean of its divisors is an integer number (3008138).
Almost surely, 225783980 is an apocalyptic number.
25783980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
25783980 is an abundant number, since it is smaller than the sum of its proper divisors (46411332).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
25783980 is a wasteful number, since it uses less digits than its factorization.
25783980 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 429745 (or 429743 counting only the distinct ones).
The product of its (nonzero) digits is 120960, while the sum is 42.
The square root of 25783980 is about 5077.7928275974. The cubic root of 25783980 is about 295.4268645539.
The spelling of 25783980 in words is "twenty-five million, seven hundred eighty-three thousand, nine hundred eighty".
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