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12190304 = 25754421
BaseRepresentation
bin101110100000…
…001001100000
3211221022221202
4232200021200
511110042204
61113140332
7205421150
oct56401140
924838852
1012190304
116976835
1240ba6a8
1326aa7c9
141894760
15110be1e
hexba0260

12190304 has 24 divisors (see below), whose sum is σ = 27428688. Its totient is φ = 5224320.

The previous prime is 12190303. The next prime is 12190307. The reversal of 12190304 is 40309121.

It is a super-2 number, since 2×121903042 = 297207023224832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12190303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26987 + ... + 27434.

It is an arithmetic number, because the mean of its divisors is an integer number (1142862).

Almost surely, 212190304 is an apocalyptic number.

12190304 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12190304 is an abundant number, since it is smaller than the sum of its proper divisors (15238384).

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

12190304 is an equidigital number, since it uses as much as digits as its factorization.

12190304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54438 (or 54430 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 12190304 is about 3491.4615850672. The cubic root of 12190304 is about 230.1467494481.

Adding to 12190304 its reverse (40309121), we get a palindrome (52499425).

The spelling of 12190304 in words is "twelve million, one hundred ninety thousand, three hundred four".

Divisors: 1 2 4 7 8 14 16 28 32 56 112 224 54421 108842 217684 380947 435368 761894 870736 1523788 1741472 3047576 6095152 12190304