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30281322612 = 22323109714937
BaseRepresentation
bin11100001100111010…
…000101000001110100
32220011100122120110010
4130030322011001310
5444004004310422
621524441500220
72121253665252
oct341472050164
986140576403
1030281322612
111192a020962
125a511a1670
132b17753798
1416739595d2
15bc3698b0c
hex70ce85074

30281322612 has 24 divisors (see below), whose sum is σ = 73728438336. Its totient is φ = 9654914368.

The previous prime is 30281322593. The next prime is 30281322623. The reversal of 30281322612 is 21622318203.

It is a self number, because there is not a number n which added to its sum of digits gives 30281322612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54857193 + ... + 54857744.

It is an arithmetic number, because the mean of its divisors is an integer number (3072018264).

Almost surely, 230281322612 is an apocalyptic number.

It is an amenable number.

30281322612 is an abundant number, since it is smaller than the sum of its proper divisors (43447115724).

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

30281322612 is a wasteful number, since it uses less digits than its factorization.

30281322612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109714967 (or 109714965 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The spelling of 30281322612 in words is "thirty billion, two hundred eighty-one million, three hundred twenty-two thousand, six hundred twelve".

Divisors: 1 2 3 4 6 12 23 46 69 92 138 276 109714937 219429874 329144811 438859748 658289622 1316579244 2523443551 5046887102 7570330653 10093774204 15140661306 30281322612