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30021223230 = 2325714698157
BaseRepresentation
bin11011111101011001…
…111000001100111110
32212111020020011011200
4123331121320030332
5442440413120410
621442551000330
72111645121105
oct337531701476
985436204150
1030021223230
111180621a399
12599a0690a6
132aa58b621b
14164b1b103c
15baa91c3c0
hex6fd67833e

30021223230 has 48 divisors (see below), whose sum is σ = 79154565984. Its totient is φ = 7892902080.

The previous prime is 30021223229. The next prime is 30021223241. The reversal of 30021223230 is 3232212003.

It is a happy number.

30021223230 is a `hidden beast` number, since 300 + 21 + 22 + 323 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2342689 + ... + 2355468.

It is an arithmetic number, because the mean of its divisors is an integer number (1649053458).

Almost surely, 230021223230 is an apocalyptic number.

30021223230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30021223230 is an abundant number, since it is smaller than the sum of its proper divisors (49133342754).

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

30021223230 is a wasteful number, since it uses less digits than its factorization.

30021223230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4698241 (or 4698238 counting only the distinct ones).

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

Adding to 30021223230 its reverse (3232212003), we get a palindrome (33253435233).

The spelling of 30021223230 in words is "thirty billion, twenty-one million, two hundred twenty-three thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 71 90 142 213 355 426 639 710 1065 1278 2130 3195 6390 4698157 9396314 14094471 23490785 28188942 42283413 46981570 70472355 84566826 140944710 211417065 333569147 422834130 667138294 1000707441 1667845735 2001414882 3002122323 3335691470 5003537205 6004244646 10007074410 15010611615 30021223230