Search a number
-
+
12012430 = 256717929
BaseRepresentation
bin101101110100…
…101110001110
3211121021221211
4231310232032
511033344210
61105245034
7204050443
oct55645616
924537854
1012012430
116865131
12403377a
132647861
1418499ca
1510c438a
hexb74b8e

12012430 has 16 divisors (see below), whose sum is σ = 21946320. Its totient is φ = 4732992.

The previous prime is 12012367. The next prime is 12012433. The reversal of 12012430 is 3421021.

It is a self number, because there is not a number n which added to its sum of digits gives 12012430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8295 + ... + 9634.

It is an arithmetic number, because the mean of its divisors is an integer number (1371645).

Almost surely, 212012430 is an apocalyptic number.

12012430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12012430 is a deficient number, since it is larger than the sum of its proper divisors (9933890).

12012430 is a wasteful number, since it uses less digits than its factorization.

12012430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18003.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12012430 is about 3465.8952667385. The cubic root of 12012430 is about 229.0218701105.

Adding to 12012430 its reverse (3421021), we get a palindrome (15433451).

The spelling of 12012430 in words is "twelve million, twelve thousand, four hundred thirty".

Divisors: 1 2 5 10 67 134 335 670 17929 35858 89645 179290 1201243 2402486 6006215 12012430