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30285136379 = 461647101537
BaseRepresentation
bin11100001101001000…
…101000000111111011
32220011121211022221202
4130031020220013323
5444010443331004
621525055324415
72121331261151
oct341510500773
986147738852
1030285136379
1111931196233
125a5252070b
132b1848a654
14167426d3d1
15bc3b9db1e
hex70d2281fb

30285136379 has 8 divisors (see below), whose sum is σ = 30398040288. Its totient is φ = 30172437760.

The previous prime is 30285136337. The next prime is 30285136417. The reversal of 30285136379 is 97363158203.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30285136379 is a prime.

It is a super-3 number, since 3×302851363793 (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30285136309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247499 + ... + 349035.

It is an arithmetic number, because the mean of its divisors is an integer number (3799755036).

Almost surely, 230285136379 is an apocalyptic number.

30285136379 is a deficient number, since it is larger than the sum of its proper divisors (112903909).

30285136379 is a wasteful number, since it uses less digits than its factorization.

30285136379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102645.

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 30285136379 in words is "thirty billion, two hundred eighty-five million, one hundred thirty-six thousand, three hundred seventy-nine".

Divisors: 1 461 647 101537 298267 46808557 65694439 30285136379