Search a number
-
+
30020301234 = 232711315313183
BaseRepresentation
bin11011111101010110…
…010111000110110010
32212111011111022102200
4123331112113012302
5442440144114414
621442515124030
72111634231060
oct337526270662
985434438380
1030020301234
111180574a710
1259998a3616
132aa5652671
14164b011030
15baa7d9109
hex6fd5971b2

30020301234 has 192 divisors, whose sum is σ = 85295628288. Its totient is φ = 7403011200.

The previous prime is 30020301197. The next prime is 30020301253. The reversal of 30020301234 is 43210302003.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2270607 + ... + 2283789.

It is an arithmetic number, because the mean of its divisors is an integer number (444248064).

Almost surely, 230020301234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30020301234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42647814144).

30020301234 is an abundant number, since it is smaller than the sum of its proper divisors (55275327054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30020301234 is a wasteful number, since it uses less digits than its factorization.

30020301234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13293 (or 13290 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 30020301234 its reverse (43210302003), we get a palindrome (73230603237).

The spelling of 30020301234 in words is "thirty billion, twenty million, three hundred one thousand, two hundred thirty-four".