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12122430 = 235404081
BaseRepresentation
bin101110001111…
…100100111110
3211210212211220
4232033210332
511100404210
61111454210
7205016235
oct56174476
924725756
1012122430
11692a841
124087366
132685948
141877b1c
1510e6c70
hexb8f93e

12122430 has 16 divisors (see below), whose sum is σ = 29093904. Its totient is φ = 3232640.

The previous prime is 12122419. The next prime is 12122443. The reversal of 12122430 is 3422121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202011 + ... + 202070.

It is an arithmetic number, because the mean of its divisors is an integer number (1818369).

Almost surely, 212122430 is an apocalyptic number.

12122430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12122430 is an abundant number, since it is smaller than the sum of its proper divisors (16971474).

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

12122430 is a wasteful number, since it uses less digits than its factorization.

12122430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404091.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 12122430 is about 3481.7280192456. The cubic root of 12122430 is about 229.7188120115.

Adding to 12122430 its reverse (3422121), we get a palindrome (15544551).

The spelling of 12122430 in words is "twelve million, one hundred twenty-two thousand, four hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 404081 808162 1212243 2020405 2424486 4040810 6061215 12122430