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228004879 = 383595313
BaseRepresentation
bin11011001011100…
…01010000001111
3120220000211220011
431211301100033
5431332124004
634342534051
75436003154
oct1545612017
9526024804
10228004879
11107780493
1264437327
133831113b
14223d222b
151503c004
hexd97140f

228004879 has 4 divisors (see below), whose sum is σ = 228600576. Its totient is φ = 227409184.

The previous prime is 228004871. The next prime is 228004919. The reversal of 228004879 is 978400822.

228004879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 228004879 - 23 = 228004871 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228004871) 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, 297274 + ... + 298039.

It is an arithmetic number, because the mean of its divisors is an integer number (57150144).

Almost surely, 2228004879 is an apocalyptic number.

228004879 is a deficient number, since it is larger than the sum of its proper divisors (595697).

228004879 is an equidigital number, since it uses as much as digits as its factorization.

228004879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595696.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 228004879 is about 15099.8304295115. The cubic root of 228004879 is about 610.9158320544.

The spelling of 228004879 in words is "two hundred twenty-eight million, four thousand, eight hundred seventy-nine".

Divisors: 1 383 595313 228004879