Search a number
-
+
30020041243 = 172576871147
BaseRepresentation
bin11011111101010101…
…010111101000011011
32212111011000002210101
4123331111113220123
5442440112304433
621442505400231
72111632066063
oct337525275033
985434002711
1030020041243
1111805592345
125999799077
132aa559121a
14164ad843a3
15baa78707d
hex6fd557a1b

30020041243 has 8 divisors (see below), whose sum is σ = 31909611312. Its totient is φ = 28144214016.

The previous prime is 30020041223. The next prime is 30020041291. The reversal of 30020041243 is 34214002003.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30020041243 - 233 = 21430106651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30020041243.

It is not an unprimeable number, because it can be changed into a prime (30020041223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3431205 + ... + 3439942.

It is an arithmetic number, because the mean of its divisors is an integer number (3988701414).

Almost surely, 230020041243 is an apocalyptic number.

30020041243 is a deficient number, since it is larger than the sum of its proper divisors (1889570069).

30020041243 is a wasteful number, since it uses less digits than its factorization.

30020041243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6871421.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 30020041243 its reverse (34214002003), we get a palindrome (64234043246).

The spelling of 30020041243 in words is "thirty billion, twenty million, forty-one thousand, two hundred forty-three".

Divisors: 1 17 257 4369 6871147 116809499 1765884779 30020041243