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30220213220 = 2254732149163
BaseRepresentation
bin11100001001010000…
…111101101111100100
32220000002122220010022
4130021100331233210
5443342333310340
621514420014312
72116612400621
oct341120755744
986002586108
1030220213220
11118a858252a
125a34831398
132b07ba8892
1416697ad348
15bbd1273b5
hex70943dbe4

30220213220 has 24 divisors (see below), whose sum is σ = 64812714624. Its totient is φ = 11830891616.

The previous prime is 30220213213. The next prime is 30220213249. The reversal of 30220213220 is 2231202203.

It is a super-2 number, since 2×302202132202 (a number of 22 digits) contains 22 as substring.

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, 16073642 + ... + 16075521.

It is an arithmetic number, because the mean of its divisors is an integer number (2700529776).

Almost surely, 230220213220 is an apocalyptic number.

It is an amenable number.

30220213220 is an abundant number, since it is smaller than the sum of its proper divisors (34592501404).

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

30220213220 is a wasteful number, since it uses less digits than its factorization.

30220213220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32149219 (or 32149217 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 30220213220 its reverse (2231202203), we get a palindrome (32451415423).

The spelling of 30220213220 in words is "thirty billion, two hundred twenty million, two hundred thirteen thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 47 94 188 235 470 940 32149163 64298326 128596652 160745815 321491630 642983260 1511010661 3022021322 6044042644 7555053305 15110106610 30220213220