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1228848852 = 2237211189989
BaseRepresentation
bin100100100111110…
…1011111011010100
310011122021222201110
41021033223323110
510004041130402
6321534255020
742311020500
oct11117537324
93148258643
101228848852
11580720370
122a3657470
131677854ca
14b92bd300
1572d3856c
hex493ebed4

1228848852 has 72 divisors (see below), whose sum is σ = 3638688480. Its totient is φ = 319179840.

The previous prime is 1228848851. The next prime is 1228848857. The reversal of 1228848852 is 2588488221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228848851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88527 + ... + 101462.

It is an arithmetic number, because the mean of its divisors is an integer number (50537340).

Almost surely, 21228848852 is an apocalyptic number.

1228848852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1228848852 is an abundant number, since it is smaller than the sum of its proper divisors (2409839628).

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

1228848852 is a wasteful number, since it uses less digits than its factorization.

1228848852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190021 (or 190012 counting only the distinct ones).

The product of its digits is 655360, while the sum is 48.

The square root of 1228848852 is about 35054.9404791964. The cubic root of 1228848852 is about 1071.1069140139.

The spelling of 1228848852 in words is "one billion, two hundred twenty-eight million, eight hundred forty-eight thousand, eight hundred fifty-two".

Divisors: 1 2 3 4 6 7 11 12 14 21 22 28 33 42 44 49 66 77 84 98 132 147 154 196 231 294 308 462 539 588 924 1078 1617 2156 3234 6468 189989 379978 569967 759956 1139934 1329923 2089879 2279868 2659846 3989769 4179758 5319692 6269637 7979538 8359516 9309461 12539274 14629153 15959076 18618922 25078548 27928383 29258306 37237844 43887459 55856766 58516612 87774918 102404071 111713532 175549836 204808142 307212213 409616284 614424426 1228848852