Search a number
-
+
30055280505 = 3517917896257
BaseRepresentation
bin11011111111011011…
…110010111101111001
32212120121022102222020
4123333123302331321
5443023122434010
621450204545053
72112540445335
oct337733627571
985517272866
1030055280505
11118234710a8
1259a9552189
132aac97bb63
1416519187c5
15bad8e8470
hex6ff6f2f79

30055280505 has 32 divisors (see below), whose sum is σ = 48391862400. Its totient is φ = 15928476672.

The previous prime is 30055280503. The next prime is 30055280539. The reversal of 30055280505 is 50508255003.

It is not a de Polignac number, because 30055280505 - 21 = 30055280503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30055280503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4800337 + ... + 4806593.

It is an arithmetic number, because the mean of its divisors is an integer number (1512245700).

Almost surely, 230055280505 is an apocalyptic number.

It is an amenable number.

30055280505 is a deficient number, since it is larger than the sum of its proper divisors (18336581895).

30055280505 is a wasteful number, since it uses less digits than its factorization.

30055280505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8233.

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 30055280505 in words is "thirty billion, fifty-five million, two hundred eighty thousand, five hundred five".

Divisors: 1 3 5 15 179 537 895 1789 2685 5367 6257 8945 18771 26835 31285 93855 320231 960693 1120003 1601155 3360009 4803465 5600015 11193773 16800045 33581319 55968865 167906595 2003685367 6011056101 10018426835 30055280505