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12020030 = 2511234751
BaseRepresentation
bin101101110110…
…100100111110
3211121200101022
4231312210332
511034120110
61105344142
7204111551
oct55664476
924550338
1012020030
11686a910
124038052
13264b159
14184c698
1510c6755
hexb7693e

12020030 has 32 divisors (see below), whose sum is σ = 24634368. Its totient is φ = 4180000.

The previous prime is 12019993. The next prime is 12020051. The reversal of 12020030 is 3002021.

It is a super-2 number, since 2×120200302 = 288962242401800, which contains 22 as substring.

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, 155 + ... + 4905.

It is an arithmetic number, because the mean of its divisors is an integer number (769824).

Almost surely, 212020030 is an apocalyptic number.

12020030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12020030 is an abundant number, since it is smaller than the sum of its proper divisors (12614338).

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

12020030 is a wasteful number, since it uses less digits than its factorization.

12020030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4792.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 12020030 is about 3466.9914911923. The cubic root of 12020030 is about 229.0701589599.

Adding to 12020030 its reverse (3002021), we get a palindrome (15022051).

Subtracting from 12020030 its reverse (3002021), we obtain a square (9018009 = 30032).

The spelling of 12020030 in words is "twelve million, twenty thousand, thirty".

Divisors: 1 2 5 10 11 22 23 46 55 110 115 230 253 506 1265 2530 4751 9502 23755 47510 52261 104522 109273 218546 261305 522610 546365 1092730 1202003 2404006 6010015 12020030