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1228048159 = 131767197421
BaseRepresentation
bin100100100110010…
…1000011100011111
310011120210022101011
41021030220130133
510003340020114
6321505200051
742301144222
oct11114503437
93146708334
101228048159
11580223838
122a3330027
13167564c20
14b91515b9
1572c2b1c4
hex4932871f

1228048159 has 32 divisors (see below), whose sum is σ = 1431815616. Its totient is φ = 1043159040.

The previous prime is 1228048139. The next prime is 1228048183. The reversal of 1228048159 is 9518408221.

It is a cyclic number.

It is not a de Polignac number, because 1228048159 - 211 = 1228046111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228048139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2916769 + ... + 2917189.

It is an arithmetic number, because the mean of its divisors is an integer number (44744238).

Almost surely, 21228048159 is an apocalyptic number.

1228048159 is a deficient number, since it is larger than the sum of its proper divisors (203767457).

1228048159 is a wasteful number, since it uses less digits than its factorization.

1228048159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 1228048159 is about 35043.5180739606. The cubic root of 1228048159 is about 1070.8742262847.

The spelling of 1228048159 in words is "one billion, two hundred twenty-eight million, forty-eight thousand, one hundred fifty-nine".

Divisors: 1 13 17 67 197 221 421 871 1139 2561 3349 5473 7157 13199 14807 28207 43537 82937 93041 171587 224383 366691 479519 1078181 1409929 2916979 5556779 6233747 18329077 72238127 94465243 1228048159