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1222031230 = 257171026917
BaseRepresentation
bin100100011010110…
…1011011101111110
310011011110121200221
41020311223131332
510000314444410
6321132211554
742166044160
oct11065533576
93134417627
101222031230
11577894172
122a1309bba
13166239304
14b8426930
157243d4da
hex48d6b77e

1222031230 has 32 divisors (see below), whose sum is σ = 2661771456. Its totient is φ = 394335744.

The previous prime is 1222031221. The next prime is 1222031231. The reversal of 1222031230 is 321302221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222031231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512269 + ... + 514648.

It is an arithmetic number, because the mean of its divisors is an integer number (83180358).

Almost surely, 21222031230 is an apocalyptic number.

1222031230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222031230 is an abundant number, since it is smaller than the sum of its proper divisors (1439740226).

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

1222031230 is a wasteful number, since it uses less digits than its factorization.

1222031230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026948.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1222031230 is about 34957.5632732031. The cubic root of 1222031230 is about 1069.1224149056.

Adding to 1222031230 its reverse (321302221), we get a palindrome (1543333451).

The spelling of 1222031230 in words is "one billion, two hundred twenty-two million, thirty-one thousand, two hundred thirty".

Divisors: 1 2 5 7 10 14 17 34 35 70 85 119 170 238 595 1190 1026917 2053834 5134585 7188419 10269170 14376838 17457589 34915178 35942095 71884190 87287945 122203123 174575890 244406246 611015615 1222031230