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1338931482 = 2371915710687
BaseRepresentation
bin100111111001110…
…0111100100011010
310110022102202200220
41033303213210122
510220231301412
6340505540510
745115505220
oct11763474432
93408382626
101338931482
11627879049
123144a4736
13184519365
14c9b76b10
157c83068c
hex4fce791a

1338931482 has 64 divisors (see below), whose sum is σ = 3242311680. Its totient is φ = 360075456.

The previous prime is 1338931459. The next prime is 1338931487. The reversal of 1338931482 is 2841398331.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1338931487) 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, 119943 + ... + 130629.

It is an arithmetic number, because the mean of its divisors is an integer number (50661120).

Almost surely, 21338931482 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1338931482, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1621155840).

1338931482 is an abundant number, since it is smaller than the sum of its proper divisors (1903380198).

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

1338931482 is a wasteful number, since it uses less digits than its factorization.

1338931482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10875.

The product of its digits is 124416, while the sum is 42.

The square root of 1338931482 is about 36591.4126811196. The cubic root of 1338931482 is about 1102.1806554486.

The spelling of 1338931482 in words is "one billion, three hundred thirty-eight million, nine hundred thirty-one thousand, four hundred eighty-two".

Divisors: 1 2 3 6 7 14 19 21 38 42 57 114 133 157 266 314 399 471 798 942 1099 2198 2983 3297 5966 6594 8949 10687 17898 20881 21374 32061 41762 62643 64122 74809 125286 149618 203053 224427 406106 448854 609159 1218318 1421371 1677859 2842742 3355718 4264113 5033577 8528226 10067154 11745013 23490026 31879321 35235039 63758642 70470078 95637963 191275926 223155247 446310494 669465741 1338931482