Search a number
-
+
30002001 = 310000667
BaseRepresentation
bin111001001110…
…0101101010001
32002110021000020
41302130231101
530140031001
62551014053
7513004251
oct162345521
962407006
1030002001
1115a31a47
12a06a329
1362a5b83
143dad961
152979736
hex1c9cb51

30002001 has 4 divisors (see below), whose sum is σ = 40002672. Its totient is φ = 20001332.

The previous prime is 30001999. The next prime is 30002009. The reversal of 30002001 is 10020003.

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 a cyclic number.

It is not a de Polignac number, because 30002001 - 21 = 30001999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30002009) 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, 5000331 + ... + 5000336.

It is an arithmetic number, because the mean of its divisors is an integer number (10000668).

Almost surely, 230002001 is an apocalyptic number.

It is an amenable number.

30002001 is a deficient number, since it is larger than the sum of its proper divisors (10000671).

30002001 is a wasteful number, since it uses less digits than its factorization.

30002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000670.

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

The square root of 30002001 is about 5477.4082374787. The cubic root of 30002001 is about 310.7301588554.

Adding to 30002001 its reverse (10020003), we get a palindrome (40022004).

The spelling of 30002001 in words is "thirty million, two thousand, one".

Divisors: 1 3 10000667 30002001