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145111208 = 231119591471
BaseRepresentation
bin10001010011000…
…11100010101000
3101010001102011012
420221203202220
5244122024313
622222123052
73411265514
oct1051434250
9333042135
10145111208
1174a03220
1240720488
13240a9928
14153b5144
15cb15da8
hex8a638a8

145111208 has 64 divisors (see below), whose sum is σ = 317952000. Its totient is φ = 61387200.

The previous prime is 145111171. The next prime is 145111223. The reversal of 145111208 is 802111541.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97913 + ... + 99383.

It is an arithmetic number, because the mean of its divisors is an integer number (4968000).

Almost surely, 2145111208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145111208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158976000).

145111208 is an abundant number, since it is smaller than the sum of its proper divisors (172840792).

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

145111208 is a wasteful number, since it uses less digits than its factorization.

145111208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566 (or 1562 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 145111208 is about 12046.2113546127. The cubic root of 145111208 is about 525.4930612038.

Adding to 145111208 its reverse (802111541), we get a palindrome (947222749).

The spelling of 145111208 in words is "one hundred forty-five million, one hundred eleven thousand, two hundred eight".

Divisors: 1 2 4 8 11 19 22 38 44 59 76 88 118 152 209 236 418 472 649 836 1121 1298 1471 1672 2242 2596 2942 4484 5192 5884 8968 11768 12331 16181 24662 27949 32362 49324 55898 64724 86789 98648 111796 129448 173578 223592 307439 347156 614878 694312 954679 1229756 1648991 1909358 2459512 3297982 3818716 6595964 7637432 13191928 18138901 36277802 72555604 145111208