Search a number
-
+
30003007 = 153119597
BaseRepresentation
bin111001001110…
…0111100111111
32002110022101111
41302130330333
530140044012
62551022451
7513010216
oct162347477
962408344
1030003007
1115a32781
12a06aa27
1362a6478
143db007d
152979ba7
hex1c9cf3f

30003007 has 4 divisors (see below), whose sum is σ = 30024136. Its totient is φ = 29981880.

The previous prime is 30002993. The next prime is 30003019. The reversal of 30003007 is 70030003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70030003 = 276725309.

It is a cyclic number.

It is not a de Polignac number, because 30003007 - 219 = 29478719 is a prime.

It is the 5478-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30003037) by changing a digit.

It is a nontrivial repunit in base 5477.

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 3 ways as a sum of consecutive naturals, for example, 8268 + ... + 11329.

It is an arithmetic number, because the mean of its divisors is an integer number (7506034).

Almost surely, 230003007 is an apocalyptic number.

30003007 is a deficient number, since it is larger than the sum of its proper divisors (21129).

30003007 is a wasteful number, since it uses less digits than its factorization.

30003007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21128.

The product of its (nonzero) digits is 63, while the sum is 13.

The square root of 30003007 is about 5477.5000684619. The cubic root of 30003007 is about 310.7336318576.

The spelling of 30003007 in words is "thirty million, three thousand, seven".

Divisors: 1 1531 19597 30003007