Base | Representation |
---|---|
bin | 1110001110011000100001 |
3 | 21000110010111 |
4 | 32032120201 |
5 | 1423311204 |
6 | 211531321 |
7 | 43460341 |
oct | 16163041 |
9 | 7013114 |
10 | 3728929 |
11 | 2117666 |
12 | 12b9b41 |
13 | a07389 |
14 | 6d0d21 |
15 | 4d9d04 |
hex | 38e621 |
3728929 has 4 divisors (see below), whose sum is σ = 3745584. Its totient is φ = 3712276.
The previous prime is 3728911. The next prime is 3728939. The reversal of 3728929 is 9298273.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9298273 = 1381 ⋅6733.
It is a cyclic number.
It is not a de Polignac number, because 3728929 - 211 = 3726881 is a prime.
It is a super-2 number, since 2×37289292 = 27809822974082, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 3728891 and 3728900.
It is not an unprimeable number, because it can be changed into a prime (3728939) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7987 + ... + 8440.
It is an arithmetic number, because the mean of its divisors is an integer number (936396).
Almost surely, 23728929 is an apocalyptic number.
It is an amenable number.
3728929 is a deficient number, since it is larger than the sum of its proper divisors (16655).
3728929 is a wasteful number, since it uses less digits than its factorization.
3728929 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 16654.
The product of its digits is 54432, while the sum is 40.
The square root of 3728929 is about 1931.0435002868. The cubic root of 3728929 is about 155.0700897026.
The spelling of 3728929 in words is "three million, seven hundred twenty-eight thousand, nine hundred twenty-nine".
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