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30120120300 = 22352157639493
BaseRepresentation
bin11100000011010011…
…001000111111101100
32212202010022122110010
4130003103020333230
5443141222322200
621500442413220
72114255540544
oct340323107754
985663278403
1030120120300
1111857028206
125a07201210
132ac02319ba
14165a396324
15bb4455150
hex7034c8fec

30120120300 has 72 divisors (see below), whose sum is σ = 87702765136. Its totient is φ = 7980860160.

The previous prime is 30120120263. The next prime is 30120120347. The reversal of 30120120300 is 302102103.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 272647 + ... + 366846.

Almost surely, 230120120300 is an apocalyptic number.

30120120300 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30120120300 is an abundant number, since it is smaller than the sum of its proper divisors (57582644836).

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

30120120300 is a wasteful number, since it uses less digits than its factorization.

30120120300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639667 (or 639660 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 30120120300 its reverse (302102103), we get a palindrome (30422222403).

The spelling of 30120120300 in words is "thirty billion, one hundred twenty million, one hundred twenty thousand, three hundred".

Divisors: 1 2 3 4 5 6 10 12 15 20 25 30 50 60 75 100 150 157 300 314 471 628 785 942 1570 1884 2355 3140 3925 4710 7850 9420 11775 15700 23550 47100 639493 1278986 1918479 2557972 3197465 3836958 6394930 7673916 9592395 12789860 15987325 19184790 31974650 38369580 47961975 63949300 95923950 100400401 191847900 200800802 301201203 401601604 502002005 602402406 1004004010 1204804812 1506006015 2008008020 2510010025 3012012030 5020020050 6024024060 7530030075 10040040100 15060060150 30120120300