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30297351946 = 2291733019469
BaseRepresentation
bin11100001101110111…
…001110011100001010
32220012110210221120011
4130031313032130022
5444022110230241
621530213222134
72121540146101
oct341567163412
986173727504
1030297351946
1111938079a44
125a5663194a
132b1ab767b4
141675b2d038
15bc4cb3281
hex70ddce70a

30297351946 has 16 divisors (see below), whose sum is σ = 47284900200. Its totient is φ = 14541757888.

The previous prime is 30297351863. The next prime is 30297351989. The reversal of 30297351946 is 64915379203.

It can be written as a sum of positive squares in 4 ways, for example, as 29544453225 + 752898721 = 171885^2 + 27439^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30297351946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1499701 + ... + 1519768.

Almost surely, 230297351946 is an apocalyptic number.

30297351946 is a deficient number, since it is larger than the sum of its proper divisors (16987548254).

30297351946 is a wasteful number, since it uses less digits than its factorization.

30297351946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019673.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The spelling of 30297351946 in words is "thirty billion, two hundred ninety-seven million, three hundred fifty-one thousand, nine hundred forty-six".

Divisors: 1 2 29 58 173 346 5017 10034 3019469 6038938 87564601 175129202 522368137 1044736274 15148675973 30297351946