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30300020 = 2253148871
BaseRepresentation
bin111001110010…
…1011101110100
32010000101210222
41303211131310
530224100040
63001233512
7515355152
oct163453564
963011728
1030300020
1116115943
12a192898
13637b70a
14404a3d2
1529d7bb5
hex1ce5774

30300020 has 24 divisors (see below), whose sum is σ = 65683968. Its totient is φ = 11728800.

The previous prime is 30299999. The next prime is 30300073. The reversal of 30300020 is 2000303.

It is a junction number, because it is equal to n+sod(n) for n = 30299980 and 30300007.

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, 23816 + ... + 25055.

It is an arithmetic number, because the mean of its divisors is an integer number (2736832).

Almost surely, 230300020 is an apocalyptic number.

It is an amenable number.

30300020 is an abundant number, since it is smaller than the sum of its proper divisors (35383948).

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

30300020 is a wasteful number, since it uses less digits than its factorization.

30300020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48911 (or 48909 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 8.

The square root of 30300020 is about 5504.5453944899. The cubic root of 30300020 is about 311.7556299301.

Adding to 30300020 its reverse (2000303), we get a palindrome (32300323).

The spelling of 30300020 in words is "thirty million, three hundred thousand, twenty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 48871 97742 195484 244355 488710 977420 1515001 3030002 6060004 7575005 15150010 30300020