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80239218240 = 2635372258987
BaseRepresentation
bin100101010111010100…
…0010100111001000000
321200010000020121201210
41022232220110321000
52303312214440430
6100510020530120
75540255046606
oct1125650247100
9250100217653
1080239218240
1131035a46305
1213673b50940
137749870b7c
143c52849876
1521494c32b0
hex12aea14e40

80239218240 has 112 divisors (see below), whose sum is σ = 261645026112. Its totient is φ = 20818814976.

The previous prime is 80239218239. The next prime is 80239218247. The reversal of 80239218240 is 4281293208.

It is not an unprimeable number, because it can be changed into a prime (80239218247) 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, 1093974 + ... + 1165013.

Almost surely, 280239218240 is an apocalyptic number.

80239218240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80239218240 is an abundant number, since it is smaller than the sum of its proper divisors (181405807872).

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

80239218240 is a wasteful number, since it uses less digits than its factorization.

80239218240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259044 (or 2259034 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The spelling of 80239218240 in words is "eighty billion, two hundred thirty-nine million, two hundred eighteen thousand, two hundred forty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 37 40 48 60 64 74 80 96 111 120 148 160 185 192 222 240 296 320 370 444 480 555 592 740 888 960 1110 1184 1480 1776 2220 2368 2960 3552 4440 5920 7104 8880 11840 17760 35520 2258987 4517974 6776961 9035948 11294935 13553922 18071896 22589870 27107844 33884805 36143792 45179740 54215688 67769610 72287584 83582519 90359480 108431376 135539220 144575168 167165038 180718960 216862752 250747557 271078440 334330076 361437920 417912595 433725504 501495114 542156880 668660152 722875840 835825190 1002990228 1084313760 1253737785 1337320304 1671650380 2005980456 2168627520 2507475570 2674640608 3343300760 4011960912 5014951140 5349281216 6686601520 8023921824 10029902280 13373203040 16047843648 20059804560 26746406080 40119609120 80239218240