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120222431440 = 24533711094021
BaseRepresentation
bin110111111110111010…
…0001011100011010000
3102111022111201022001221
41233331310023203100
53432203420301230
6131121315534424
711454136543366
oct1577564134320
9374274638057
10120222431440
1146a93479161
121b3722ba414
13b44c2c66c7
145b66ac7636
1531d979127a
hex1bfdd0b8d0

120222431440 has 80 divisors (see below), whose sum is σ = 280669156560. Its totient is φ = 47891128320.

The previous prime is 120222431401. The next prime is 120222431443. The reversal of 120222431440 is 44134222021.

It can be written as a sum of positive squares in 8 ways, for example, as 60582930496 + 59639500944 = 246136^2 + 244212^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120222431443) 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, 29896630 + ... + 29900650.

It is an arithmetic number, because the mean of its divisors is an integer number (3508364457).

Almost surely, 2120222431440 is an apocalyptic number.

120222431440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120222431440 is an abundant number, since it is smaller than the sum of its proper divisors (160446725120).

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

120222431440 is a wasteful number, since it uses less digits than its factorization.

120222431440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5480 (or 5474 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 120222431440 its reverse (44134222021), we get a palindrome (164356653461).

The spelling of 120222431440 in words is "one hundred twenty billion, two hundred twenty-two million, four hundred thirty-one thousand, four hundred forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 337 674 1109 1348 1685 2218 2696 3370 4021 4436 5392 5545 6740 8042 8872 11090 13480 16084 17744 20105 22180 26960 32168 40210 44360 64336 80420 88720 160840 321680 373733 747466 1355077 1494932 1868665 2710154 2989864 3737330 4459289 5420308 5979728 6775385 7474660 8918578 10840616 13550770 14949320 17837156 21681232 22296445 27101540 29898640 35674312 44592890 54203080 71348624 89185780 108406160 178371560 356743120 1502780393 3005560786 6011121572 7513901965 12022243144 15027803930 24044486288 30055607860 60111215720 120222431440