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12270430 = 251789811
BaseRepresentation
bin101110110011…
…101101011110
3212002101212101
4232303231132
511120123210
61114555314
7206203564
oct56635536
925071771
1012270430
116a20a57
124138b3a
132708113
1418b5a34
151125a3a
hexbb3b5e

12270430 has 32 divisors (see below), whose sum is σ = 23677920. Its totient is φ = 4561920.

The previous prime is 12270397. The next prime is 12270443. The reversal of 12270430 is 3407221.

It is a junction number, because it is equal to n+sod(n) for n = 12270398 and 12270407.

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, 14725 + ... + 15535.

It is an arithmetic number, because the mean of its divisors is an integer number (739935).

Almost surely, 212270430 is an apocalyptic number.

12270430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12270430 is a deficient number, since it is larger than the sum of its proper divisors (11407490).

12270430 is a wasteful number, since it uses less digits than its factorization.

12270430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 12270430 is about 3502.9173555766. The cubic root of 12270430 is about 230.6498947380.

Adding to 12270430 its reverse (3407221), we get a palindrome (15677651).

The spelling of 12270430 in words is "twelve million, two hundred seventy thousand, four hundred thirty".

Divisors: 1 2 5 10 17 34 85 89 170 178 445 811 890 1513 1622 3026 4055 7565 8110 13787 15130 27574 68935 72179 137870 144358 360895 721790 1227043 2454086 6135215 12270430