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228790715 = 5297919973
BaseRepresentation
bin11011010001100…
…01000110111011
3120221111202212012
431220301012323
5432032300330
634411440135
75445455216
oct1550610673
9527452765
10228790715
1110816793a
126475604b
1338527a2a
142255877d
1515144c95
hexda311bb

228790715 has 16 divisors (see below), whose sum is σ = 287625600. Its totient is φ = 174475392.

The previous prime is 228790693. The next prime is 228790733. The reversal of 228790715 is 517097822.

It is a cyclic number.

It is not a de Polignac number, because 228790715 - 26 = 228790651 is a prime.

It is a super-2 number, since 2×2287907152 = 104690382540422450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1469 + ... + 21441.

It is an arithmetic number, because the mean of its divisors is an integer number (17976600).

Almost surely, 2228790715 is an apocalyptic number.

228790715 is a deficient number, since it is larger than the sum of its proper divisors (58834885).

228790715 is a wasteful number, since it uses less digits than its factorization.

228790715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20086.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 228790715 is about 15125.8293987470. The cubic root of 228790715 is about 611.6168830816.

The spelling of 228790715 in words is "two hundred twenty-eight million, seven hundred ninety thousand, seven hundred fifteen".

Divisors: 1 5 29 79 145 395 2291 11455 19973 99865 579217 1577867 2896085 7889335 45758143 228790715