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228555001 = 2417191319
BaseRepresentation
bin11011001111101…
…11100011111001
3120221001210112001
431213313203321
5432002230001
634402421001
75443454053
oct1547674371
9527053461
10228555001
11108016834
1264661761
133847465c
14224d68d3
15150ea001
hexd9f78f9

228555001 has 8 divisors (see below), whose sum is σ = 229996800. Its totient is φ = 227117760.

The previous prime is 228554999. The next prime is 228555007. The reversal of 228555001 is 100555822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228555001 - 21 = 228554999 is a prime.

It is a super-2 number, since 2×2285550012 = 104474776964220002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228555007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172620 + ... + 173938.

It is an arithmetic number, because the mean of its divisors is an integer number (28749600).

Almost surely, 2228555001 is an apocalyptic number.

It is an amenable number.

228555001 is a deficient number, since it is larger than the sum of its proper divisors (1441799).

228555001 is a wasteful number, since it uses less digits than its factorization.

228555001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 228555001 is about 15118.0356197490. The cubic root of 228555001 is about 611.4067693684.

The spelling of 228555001 in words is "two hundred twenty-eight million, five hundred fifty-five thousand, one".

Divisors: 1 241 719 1319 173279 317879 948361 228555001