Search a number
-
+
30021301 = 283310597
BaseRepresentation
bin111001010000…
…1011010110101
32002111020111001
41302201122311
530141140201
62551243301
7513114442
oct162413265
962436431
1030021301
1115a454a2
12a079531
1362b18ab
143db69c9
152980301
hex1ca16b5

30021301 has 4 divisors (see below), whose sum is σ = 30034732. Its totient is φ = 30007872.

The previous prime is 30021289. The next prime is 30021317. The reversal of 30021301 is 10312003.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5171076 + 24850225 = 2274^2 + 4985^2 .

It is a cyclic number.

It is not a de Polignac number, because 30021301 - 29 = 30020789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30022301) 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, 2466 + ... + 8131.

It is an arithmetic number, because the mean of its divisors is an integer number (7508683).

Almost surely, 230021301 is an apocalyptic number.

It is an amenable number.

30021301 is a deficient number, since it is larger than the sum of its proper divisors (13431).

30021301 is a wasteful number, since it uses less digits than its factorization.

30021301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13430.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 30021301 is about 5479.1697363743. The cubic root of 30021301 is about 310.7967744851.

Adding to 30021301 its reverse (10312003), we get a palindrome (40333304).

The spelling of 30021301 in words is "thirty million, twenty-one thousand, three hundred one".

Divisors: 1 2833 10597 30021301