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144978028108 = 221937239921491
BaseRepresentation
bin1000011100000101011…
…1010010011001001100
3111212012202201220112121
42013001113102121030
54333403333344413
6150334010142324
713321455622534
oct2070127223114
9455182656477
10144978028108
1156537354361
1224120a219a4
1310895cc9a64
1470348104c4
153b87c87b8d
hex21c15d264c

144978028108 has 48 divisors (see below), whose sum is σ = 274409856000. Its totient is φ = 66786793920.

The previous prime is 144978028099. The next prime is 144978028163. The reversal of 144978028108 is 801820879441.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6735243 + ... + 6756733.

It is an arithmetic number, because the mean of its divisors is an integer number (5716872000).

Almost surely, 2144978028108 is an apocalyptic number.

It is an amenable number.

144978028108 is a deficient number, since it is larger than the sum of its proper divisors (129431827892).

144978028108 is a wasteful number, since it uses less digits than its factorization.

144978028108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23950 (or 23948 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 52.

The spelling of 144978028108 in words is "one hundred forty-four billion, nine hundred seventy-eight million, twenty-eight thousand, one hundred eight".

Divisors: 1 2 4 19 37 38 74 76 148 703 1406 2399 2812 4798 9596 21491 42982 45581 85964 88763 91162 177526 182324 355052 408329 795167 816658 1590334 1633316 1686497 3180668 3372994 6745988 15108173 30216346 51556909 60432692 103113818 206227636 979581271 1907605633 1959162542 3815211266 3918325084 7630422532 36244507027 72489014054 144978028108