Search a number
-
+
30313024240 = 245619612137
BaseRepresentation
bin11100001110110011…
…000000101011110000
32220020120022011220111
4130032303000223300
5444040113233430
621531533151104
72122120311652
oct341663005360
986216264814
1030313024240
1111945a03854
125a5b92b494
132b211a3145
141677c4c6d2
15bc635bc2a
hex70ecc0af0

30313024240 has 40 divisors (see below), whose sum is σ = 70591754160. Its totient is φ = 12105601536.

The previous prime is 30313024237. The next prime is 30313024297. The reversal of 30313024240 is 4242031303.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256549 + ... + 355588.

It is an arithmetic number, because the mean of its divisors is an integer number (1764793854).

Almost surely, 230313024240 is an apocalyptic number.

It is an amenable number.

30313024240 is an abundant number, since it is smaller than the sum of its proper divisors (40278729920).

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

30313024240 is a wasteful number, since it uses less digits than its factorization.

30313024240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612769 (or 612763 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 30313024240 its reverse (4242031303), we get a palindrome (34555055543).

The spelling of 30313024240 in words is "thirty billion, three hundred thirteen million, twenty-four thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 619 1238 2476 3095 4952 6190 9904 12380 24760 49520 612137 1224274 2448548 3060685 4897096 6121370 9794192 12242740 24485480 48970960 378912803 757825606 1515651212 1894564015 3031302424 3789128030 6062604848 7578256060 15156512120 30313024240