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12209430 = 235406981
BaseRepresentation
bin101110100100…
…110100010110
3211222022012010
4232210310112
511111200210
61113405050
7205531002
oct56446426
924868163
1012209430
11698a142
124109786
1326b641c
14189b702
151112920
hexba4d16

12209430 has 16 divisors (see below), whose sum is σ = 29302704. Its totient is φ = 3255840.

The previous prime is 12209429. The next prime is 12209437. The reversal of 12209430 is 3490221.

12209430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12209397 and 12209406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12209437) 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, 203461 + ... + 203520.

It is an arithmetic number, because the mean of its divisors is an integer number (1831419).

Almost surely, 212209430 is an apocalyptic number.

12209430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12209430 is an abundant number, since it is smaller than the sum of its proper divisors (17093274).

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

12209430 is a wasteful number, since it uses less digits than its factorization.

12209430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406991.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 12209430 is about 3494.1994791368. The cubic root of 12209430 is about 230.2670496110.

Adding to 12209430 its reverse (3490221), we get a palindrome (15699651).

The spelling of 12209430 in words is "twelve million, two hundred nine thousand, four hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 406981 813962 1220943 2034905 2441886 4069810 6104715 12209430