Base | Representation |
---|---|
bin | 100101011011111… |
… | …101101010000011 |
3 | 1121202212010222022 |
4 | 211123331222003 |
5 | 2241242244202 |
6 | 142154032055 |
7 | 21364440452 |
oct | 4533755203 |
9 | 1552763868 |
10 | 628087427 |
11 | 2a25a2420 |
12 | 15641862b |
13 | a0181186 |
14 | 5d5b8b99 |
15 | 3a219ea2 |
hex | 256fda83 |
628087427 has 32 divisors (see below), whose sum is σ = 757624320. Its totient is φ = 513976320.
The previous prime is 628087403. The next prime is 628087429. The reversal of 628087427 is 724780826.
It is not a de Polignac number, because 628087427 - 26 = 628087363 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (628087429) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 927413 + ... + 928089.
It is an arithmetic number, because the mean of its divisors is an integer number (23675760).
Almost surely, 2628087427 is an apocalyptic number.
628087427 is a deficient number, since it is larger than the sum of its proper divisors (129536893).
628087427 is a wasteful number, since it uses less digits than its factorization.
628087427 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 923.
The product of its (nonzero) digits is 301056, while the sum is 44.
The square root of 628087427 is about 25061.6724701286. The cubic root of 628087427 is about 856.3935083883.
The spelling of 628087427 in words is "six hundred twenty-eight million, eighty-seven thousand, four hundred twenty-seven".
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