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30354220 = 22513116747
BaseRepresentation
bin111001111001…
…0101100101100
32010010011011101
41303302230230
530232313340
63002332444
7516002161
oct163625454
963104141
1030354220
1116152636
12a1ba124
13639a2a0
144062068
1529e8c9a
hex1cf2b2c

30354220 has 24 divisors (see below), whose sum is σ = 68647824. Its totient is φ = 11207616.

The previous prime is 30354217. The next prime is 30354241. The reversal of 30354220 is 2245303.

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, 58114 + ... + 58633.

It is an arithmetic number, because the mean of its divisors is an integer number (2860326).

Almost surely, 230354220 is an apocalyptic number.

It is an amenable number.

30354220 is an abundant number, since it is smaller than the sum of its proper divisors (38293604).

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

30354220 is a wasteful number, since it uses less digits than its factorization.

30354220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116769 (or 116767 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 30354220 is about 5509.4663988448. The cubic root of 30354220 is about 311.9414063757.

Adding to 30354220 its reverse (2245303), we get a palindrome (32599523).

The spelling of 30354220 in words is "thirty million, three hundred fifty-four thousand, two hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 116747 233494 466988 583735 1167470 1517711 2334940 3035422 6070844 7588555 15177110 30354220