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30830460880 = 2452549151189
BaseRepresentation
bin11100101101101000…
…110111111111010000
32221120121221200112111
4130231220313333100
51001120044222010
622055135435104
72141002410412
oct345550677720
987517850474
1030830460880
1112090a9a63a
125b85085a94
132ba445197b
1416c68629b2
15c069bb58a
hex72da37fd0

30830460880 has 40 divisors (see below), whose sum is σ = 71709417000. Its totient is φ = 12327264768.

The previous prime is 30830460841. The next prime is 30830460887. The reversal of 30830460880 is 8806403803.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6378258496 + 24452202384 = 79864^2 + 156372^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30830460887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128326 + ... + 279514.

It is an arithmetic number, because the mean of its divisors is an integer number (1792735425).

Almost surely, 230830460880 is an apocalyptic number.

It is an amenable number.

30830460880 is an abundant number, since it is smaller than the sum of its proper divisors (40878956120).

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

30830460880 is a wasteful number, since it uses less digits than its factorization.

30830460880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153751 (or 153745 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 30830460880 in words is "thirty billion, eight hundred thirty million, four hundred sixty thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 2549 5098 10196 12745 20392 25490 40784 50980 101960 151189 203920 302378 604756 755945 1209512 1511890 2419024 3023780 6047560 12095120 385380761 770761522 1541523044 1926903805 3083046088 3853807610 6166092176 7707615220 15415230440 30830460880