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144678144 = 2831343337
BaseRepresentation
bin10001001111110…
…01110100000000
3101002020102002210
420213321310000
5244014200034
622204542120
73404513112
oct1047716400
9332212083
10144678144
1174737916
1240551940
1323c87790
14153013b2
15ca7c8e9
hex89f9d00

144678144 has 144 divisors (see below), whose sum is σ = 425577152. Its totient is φ = 43352064.

The previous prime is 144678139. The next prime is 144678167. The reversal of 144678144 is 441876441.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

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, 429144 + ... + 429480.

Almost surely, 2144678144 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 144678144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212788576).

144678144 is an abundant number, since it is smaller than the sum of its proper divisors (280899008).

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

144678144 is a wasteful number, since it uses less digits than its factorization.

144678144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 398 counting only the distinct ones).

The product of its digits is 86016, while the sum is 39.

The square root of 144678144 is about 12028.2228113716. Note that the first 3 decimals coincide. The cubic root of 144678144 is about 524.9697869234.

The spelling of 144678144 in words is "one hundred forty-four million, six hundred seventy-eight thousand, one hundred forty-four".

Divisors: 1 2 3 4 6 8 12 13 16 24 26 32 39 43 48 52 64 78 86 96 104 128 129 156 172 192 208 256 258 312 337 344 384 416 516 559 624 674 688 768 832 1011 1032 1118 1248 1348 1376 1664 1677 2022 2064 2236 2496 2696 2752 3328 3354 4044 4128 4381 4472 4992 5392 5504 6708 8088 8256 8762 8944 9984 10784 11008 13143 13416 14491 16176 16512 17524 17888 21568 26286 26832 28982 32352 33024 35048 35776 43136 43473 52572 53664 57964 64704 70096 71552 86272 86946 105144 107328 115928 129408 140192 143104 173892 188383 210288 214656 231856 258816 280384 347784 376766 420576 429312 463712 560768 565149 695568 753532 841152 927424 1121536 1130298 1391136 1507064 1682304 1854848 2260596 2782272 3014128 3364608 3709696 4521192 5564544 6028256 9042384 11129088 12056512 18084768 24113024 36169536 48226048 72339072 144678144