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30214333987 = 188915994883
BaseRepresentation
bin11100001000111010…
…100010011000100011
32212222200121012022221
4130020322202120203
5443334332141422
621514050011511
72116511413165
oct341072423043
985880535287
1030214333987
11118a5227362
125a32876b97
132b068ca846
141668abc935
15bbc8653c7
hex708ea2623

30214333987 has 4 divisors (see below), whose sum is σ = 30230330760. Its totient is φ = 30198337216.

The previous prime is 30214333979. The next prime is 30214333991. The reversal of 30214333987 is 78933341203.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30214333987 - 23 = 30214333979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30214333997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7995553 + ... + 7999330.

It is an arithmetic number, because the mean of its divisors is an integer number (7557582690).

Almost surely, 230214333987 is an apocalyptic number.

30214333987 is a deficient number, since it is larger than the sum of its proper divisors (15996773).

30214333987 is a wasteful number, since it uses less digits than its factorization.

30214333987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15996772.

The product of its (nonzero) digits is 326592, while the sum is 43.

The spelling of 30214333987 in words is "thirty billion, two hundred fourteen million, three hundred thirty-three thousand, nine hundred eighty-seven".

Divisors: 1 1889 15994883 30214333987