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12153460 = 2251155243
BaseRepresentation
bin101110010111…
…001001110100
3211212110102011
4232113021310
511102402320
61112254004
7205205554
oct56271164
924773364
1012153460
116951090
1240a1304
132696ac7
141885164
15110105a
hexb97274

12153460 has 24 divisors (see below), whose sum is σ = 27842976. Its totient is φ = 4419360.

The previous prime is 12153451. The next prime is 12153467. The reversal of 12153460 is 6435121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12153467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27402 + ... + 27841.

It is an arithmetic number, because the mean of its divisors is an integer number (1160124).

Almost surely, 212153460 is an apocalyptic number.

12153460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12153460 is an abundant number, since it is smaller than the sum of its proper divisors (15689516).

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

12153460 is a wasteful number, since it uses less digits than its factorization.

12153460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55263 (or 55261 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 12153460 is about 3486.1812919009. The cubic root of 12153460 is about 229.9146501213.

Adding to 12153460 its reverse (6435121), we get a palindrome (18588581).

The spelling of 12153460 in words is "twelve million, one hundred fifty-three thousand, four hundred sixty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 55243 110486 220972 276215 552430 607673 1104860 1215346 2430692 3038365 6076730 12153460