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220678230 = 23513753693
BaseRepresentation
bin11010010011101…
…00100001010110
3120101020121121210
431021310201112
5422443200410
633521522250
75316506523
oct1511644126
9511217553
10220678230
11103626903
1261aa3386
1336947346
142144614a
1514591220
hexd274856

220678230 has 32 divisors (see below), whose sum is σ = 533503584. Its totient is φ = 58416896.

The previous prime is 220678219. The next prime is 220678247. The reversal of 220678230 is 32876022.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent 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, 22737 + ... + 30956.

It is an arithmetic number, because the mean of its divisors is an integer number (16671987).

Almost surely, 2220678230 is an apocalyptic number.

220678230 is an abundant number, since it is smaller than the sum of its proper divisors (312825354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220678230 is a wasteful number, since it uses less digits than its factorization.

220678230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53840.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 220678230 is about 14855.2425089596. The cubic root of 220678230 is about 604.3007927556.

The spelling of 220678230 in words is "two hundred twenty million, six hundred seventy-eight thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 137 274 411 685 822 1370 2055 4110 53693 107386 161079 268465 322158 536930 805395 1610790 7355941 14711882 22067823 36779705 44135646 73559410 110339115 220678230