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228608315 = 51316321577
BaseRepresentation
bin11011010000001…
…00100100111011
3120221011111122122
431220010210323
5432010431230
634403511455
75444065355
oct1550044473
9527144578
10228608315
111080528a1
126468858b
13384929c0
142250c0d5
151510abe5
hexda0493b

228608315 has 16 divisors (see below), whose sum is σ = 297258528. Its totient is φ = 167774976.

The previous prime is 228608287. The next prime is 228608321. The reversal of 228608315 is 513806822.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-228608315 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194 + ... + 21383.

It is an arithmetic number, because the mean of its divisors is an integer number (18578658).

Almost surely, 2228608315 is an apocalyptic number.

228608315 is a deficient number, since it is larger than the sum of its proper divisors (68650213).

228608315 is a wasteful number, since it uses less digits than its factorization.

228608315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21758.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 228608315 is about 15119.7987751160. The cubic root of 228608315 is about 611.4543057107.

The spelling of 228608315 in words is "two hundred twenty-eight million, six hundred eight thousand, three hundred fifteen".

Divisors: 1 5 13 65 163 815 2119 10595 21577 107885 280501 1402505 3517051 17585255 45721663 228608315