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3120120030 = 235281370121
BaseRepresentation
bin1011100111111001…
…0100000011011110
322001110001112001010
42321332110003132
522342222320110
61233335000050
7140214403566
oct27176240336
98043045033
103120120030
1113612543a5
12730b09026
133a9550c91
14218553da6
15133dc0020
hexb9f940de

3120120030 has 32 divisors (see below), whose sum is σ = 7514957088. Its totient is φ = 829068800.

The previous prime is 3120120019. The next prime is 3120120061. The reversal of 3120120030 is 300210213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3120119988 and 3120120015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176631 + ... + 193490.

It is an arithmetic number, because the mean of its divisors is an integer number (234842409).

Almost surely, 23120120030 is an apocalyptic number.

3120120030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3120120030 is an abundant number, since it is smaller than the sum of its proper divisors (4394837058).

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

3120120030 is a wasteful number, since it uses less digits than its factorization.

3120120030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370412.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 3120120030 is about 55858.0346055964. The cubic root of 3120120030 is about 1461.2474529572.

Adding to 3120120030 its reverse (300210213), we get a palindrome (3420330243).

The spelling of 3120120030 in words is "three billion, one hundred twenty million, one hundred twenty thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 281 562 843 1405 1686 2810 4215 8430 370121 740242 1110363 1850605 2220726 3701210 5551815 11103630 104004001 208008002 312012003 520020005 624024006 1040040010 1560060015 3120120030