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30203120 = 2452231693
BaseRepresentation
bin111001100110…
…1110011110000
32002211110220002
41303031303300
530212444440
62555205132
7514502513
oct163156360
962743802
1030203120
111605a062
12a1467a8
13634658c
144022d7a
1529b9115
hex1ccdcf0

30203120 has 40 divisors (see below), whose sum is σ = 70578816. Its totient is φ = 12019968.

The previous prime is 30203099. The next prime is 30203153. The reversal of 30203120 is 2130203.

It is a tau number, because it is divible by the number of its divisors (40).

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, 16994 + ... + 18686.

Almost surely, 230203120 is an apocalyptic number.

It is an amenable number.

30203120 is an abundant number, since it is smaller than the sum of its proper divisors (40375696).

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

30203120 is a wasteful number, since it uses less digits than its factorization.

30203120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929 (or 1923 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 30203120 is about 5495.7365293471. The cubic root of 30203120 is about 311.4229416900.

Adding to 30203120 its reverse (2130203), we get a palindrome (32333323).

The spelling of 30203120 in words is "thirty million, two hundred three thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 80 223 446 892 1115 1693 1784 2230 3386 3568 4460 6772 8465 8920 13544 16930 17840 27088 33860 67720 135440 377539 755078 1510156 1887695 3020312 3775390 6040624 7550780 15101560 30203120