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143998080 = 2735372027
BaseRepresentation
bin10001001010100…
…11110010000000
3101000221212020020
420211103302000
5243330414310
622142213440
73365651322
oct1045236200
9330855206
10143998080
1174312986
1240284280
1323aaa085
14151a5612
15c996170
hex8953c80

143998080 has 128 divisors (see below), whose sum is σ = 471631680. Its totient is φ = 37343232.

The previous prime is 143998039. The next prime is 143998081. The reversal of 143998080 is 80899341.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (143998081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70027 + ... + 72053.

Almost surely, 2143998080 is an apocalyptic number.

143998080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143998080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235815840).

143998080 is an abundant number, since it is smaller than the sum of its proper divisors (327633600).

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

143998080 is a wasteful number, since it uses less digits than its factorization.

143998080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086 (or 2074 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 143998080 is about 11999.9199997333. The cubic root of 143998080 is about 524.1459492835.

The spelling of 143998080 in words is "one hundred forty-three million, nine hundred ninety-eight thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 37 40 48 60 64 74 80 96 111 120 128 148 160 185 192 222 240 296 320 370 384 444 480 555 592 640 740 888 960 1110 1184 1480 1776 1920 2027 2220 2368 2960 3552 4054 4440 4736 5920 6081 7104 8108 8880 10135 11840 12162 14208 16216 17760 20270 23680 24324 30405 32432 35520 40540 48648 60810 64864 71040 74999 81080 97296 121620 129728 149998 162160 194592 224997 243240 259456 299996 324320 374995 389184 449994 486480 599992 648640 749990 778368 899988 972960 1124985 1199984 1297280 1499980 1799976 1945920 2249970 2399968 2999960 3599952 3891840 4499940 4799936 5999920 7199904 8999880 9599872 11999840 14399808 17999760 23999680 28799616 35999520 47999360 71999040 143998080