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30012001 = 191579579
BaseRepresentation
bin111001001111…
…1001001100001
32002110202201121
41302133021201
530140341001
62551132241
7513045355
oct162371141
962422647
1030012001
1115a39508
12a074081
1362aa5a6
143db3465
15297c6a1
hex1c9f261

30012001 has 4 divisors (see below), whose sum is σ = 31591600. Its totient is φ = 28432404.

The previous prime is 30011983. The next prime is 30012019. The reversal of 30012001 is 10021003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (30011983) and next prime (30012019).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30012001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30016001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789771 + ... + 789808.

It is an arithmetic number, because the mean of its divisors is an integer number (7897900).

Almost surely, 230012001 is an apocalyptic number.

It is an amenable number.

30012001 is a deficient number, since it is larger than the sum of its proper divisors (1579599).

30012001 is a wasteful number, since it uses less digits than its factorization.

30012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579598.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 30012001 is about 5478.3210019129. The cubic root of 30012001 is about 310.7646782910.

Adding to 30012001 its reverse (10021003), we get a palindrome (40033004).

The spelling of 30012001 in words is "thirty million, twelve thousand, one".

Divisors: 1 19 1579579 30012001