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30418849450 = 2521125027909
BaseRepresentation
bin11100010101000110…
…101100111010101010
32220111221102122210201
4130111012230322222
5444244211140300
621550233302414
72124543645163
oct342506547252
986457378721
1030418849450
111199a713900
125a8b264a0a
132b3a0a6202
141687d1876a
15bd07b266a
hex7151aceaa

30418849450 has 36 divisors (see below), whose sum is σ = 62190218790. Its totient is φ = 11061397600.

The previous prime is 30418849441. The next prime is 30418849451. The reversal of 30418849450 is 5494881403.

It can be written as a sum of positive squares in 3 ways, for example, as 28313783289 + 2105066161 = 168267^2 + 45881^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30418849450.

It is not an unprimeable number, because it can be changed into a prime (30418849451) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2507905 + ... + 2520004.

Almost surely, 230418849450 is an apocalyptic number.

30418849450 is an abundant number, since it is smaller than the sum of its proper divisors (31771369340).

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

30418849450 is a wasteful number, since it uses less digits than its factorization.

30418849450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5027943 (or 5027927 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 30418849450 in words is "thirty billion, four hundred eighteen million, eight hundred forty-nine thousand, four hundred fifty".

Divisors: 1 2 5 10 11 22 25 50 55 110 121 242 275 550 605 1210 3025 6050 5027909 10055818 25139545 50279090 55306999 110613998 125697725 251395450 276534995 553069990 608376989 1216753978 1382674975 2765349950 3041884945 6083769890 15209424725 30418849450