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220909074 = 23151243829
BaseRepresentation
bin11010010101011…
…00111000010010
3120101200100021120
431022230320102
5423023042244
633530503110
75321460531
oct1512547022
9511610246
10220909074
11103774291
1261b94a96
13369c8439
14214a6318
15145d9819
hexd2ace12

220909074 has 16 divisors (see below), whose sum is σ = 444745920. Its totient is φ = 73148400.

The previous prime is 220909057. The next prime is 220909079. The reversal of 220909074 is 470909022.

It is not an unprimeable number, because it can be changed into a prime (220909079) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 121009 + ... + 122820.

It is an arithmetic number, because the mean of its divisors is an integer number (27796620).

Almost surely, 2220909074 is an apocalyptic number.

220909074 is an abundant number, since it is smaller than the sum of its proper divisors (223836846).

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

220909074 is a wasteful number, since it uses less digits than its factorization.

220909074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243985.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 220909074 is about 14863.0102603746. The cubic root of 220909074 is about 604.5114321688.

The spelling of 220909074 in words is "two hundred twenty million, nine hundred nine thousand, seventy-four".

Divisors: 1 2 3 6 151 302 453 906 243829 487658 731487 1462974 36818179 73636358 110454537 220909074