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11880030 = 235396001
BaseRepresentation
bin101101010100…
…011001011110
3211100120100010
4231110121132
511020130110
61102344050
7202656441
oct55243136
924316303
1011880030
116784708
123b8b026
1325cc506
141813658
15109a020
hexb5465e

11880030 has 16 divisors (see below), whose sum is σ = 28512144. Its totient is φ = 3168000.

The previous prime is 11880023. The next prime is 11880031. The reversal of 11880030 is 3008811.

It is a happy number.

It is a super-2 number, since 2×118800302 = 282270225601800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11879979 and 11880006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11880031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197971 + ... + 198030.

It is an arithmetic number, because the mean of its divisors is an integer number (1782009).

Almost surely, 211880030 is an apocalyptic number.

11880030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11880030 is an abundant number, since it is smaller than the sum of its proper divisors (16632114).

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

11880030 is a wasteful number, since it uses less digits than its factorization.

11880030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396011.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 11880030 is about 3446.7419398615. The cubic root of 11880030 is about 228.1773397138.

Adding to 11880030 its reverse (3008811), we get a palindrome (14888841).

The spelling of 11880030 in words is "eleven million, eight hundred eighty thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 396001 792002 1188003 1980005 2376006 3960010 5940015 11880030