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30403122220 = 22515714516673
BaseRepresentation
bin11100010100001010…
…101101010000101100
32220110211211122002201
4130110022231100230
5444231144402340
621544512231244
72124263163202
oct342412552054
986424748081
1030403122220
1111991851799
125a85b3b524
132b36a5a863
141685bc3072
15bce20779a
hex7142ad42c

30403122220 has 48 divisors (see below), whose sum is σ = 64307140128. Its totient is φ = 12073651200.

The previous prime is 30403122209. The next prime is 30403122229. The reversal of 30403122220 is 2222130403.

It is not an unprimeable number, because it can be changed into a prime (30403122229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4552804 + ... + 4559476.

It is an arithmetic number, because the mean of its divisors is an integer number (1339732086).

Almost surely, 230403122220 is an apocalyptic number.

It is an amenable number.

30403122220 is an abundant number, since it is smaller than the sum of its proper divisors (33904017908).

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

30403122220 is a wasteful number, since it uses less digits than its factorization.

30403122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8290 (or 8288 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 30403122220 its reverse (2222130403), we get a palindrome (32625252623).

The spelling of 30403122220 in words is "thirty billion, four hundred three million, one hundred twenty-two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 157 314 628 785 1451 1570 2902 3140 5804 6673 7255 13346 14510 26692 29020 33365 66730 133460 227807 455614 911228 1047661 1139035 2095322 2278070 4190644 4556140 5238305 9682523 10476610 19365046 20953220 38730092 48412615 96825230 193650460 1520156111 3040312222 6080624444 7600780555 15201561110 30403122220