Base | Representation |
---|---|
bin | 101001000101111… |
… | …101111001101000 |
3 | 1210001021200022220 |
4 | 221011331321220 |
5 | 2402443230440 |
6 | 152224514040 |
7 | 23041026231 |
oct | 5105757150 |
9 | 1701250286 |
10 | 689430120 |
11 | 324190065 |
12 | 172a7b920 |
13 | acaab322 |
14 | 677c6088 |
15 | 407d58d0 |
hex | 2917de68 |
689430120 has 32 divisors (see below), whose sum is σ = 2068290720. Its totient is φ = 183848000.
The previous prime is 689430109. The next prime is 689430149. The reversal of 689430120 is 21034986.
It is a super-3 number, since 3×6894301203 (a number of 27 digits) contains 333 as substring.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2872506 + ... + 2872745.
It is an arithmetic number, because the mean of its divisors is an integer number (64634085).
Almost surely, 2689430120 is an apocalyptic number.
689430120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.
It is an amenable number.
689430120 is an abundant number, since it is smaller than the sum of its proper divisors (1378860600).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
689430120 is a wasteful number, since it uses less digits than its factorization.
689430120 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5745265 (or 5745261 counting only the distinct ones).
The product of its (nonzero) digits is 10368, while the sum is 33.
The square root of 689430120 is about 26257.0013520204. The cubic root of 689430120 is about 883.4122510086.
The spelling of 689430120 in words is "six hundred eighty-nine million, four hundred thirty thousand, one hundred twenty".
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