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12080393 = 13929261
BaseRepresentation
bin101110000101…
…010100001001
3211201202011222
4232011110021
511043033033
61110531425
7204452543
oct56052411
924652158
1012080393
1169011a6
124066b75
13266c780
141866693
1510d9598
hexb85509

12080393 has 4 divisors (see below), whose sum is σ = 13009668. Its totient is φ = 11151120.

The previous prime is 12080381. The next prime is 12080399. The reversal of 12080393 is 39308021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39308021 = 291355449.

It can be written as a sum of positive squares in 2 ways, for example, as 5257849 + 6822544 = 2293^2 + 2612^2 .

It is a cyclic number.

It is not a de Polignac number, because 12080393 - 210 = 12079369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12080399) 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, 464618 + ... + 464643.

It is an arithmetic number, because the mean of its divisors is an integer number (3252417).

Almost surely, 212080393 is an apocalyptic number.

12080393 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12080393 is a deficient number, since it is larger than the sum of its proper divisors (929275).

12080393 is an equidigital number, since it uses as much as digits as its factorization.

12080393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929274.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 12080393 is about 3475.6859754587. The cubic root of 12080393 is about 229.4529722023.

The spelling of 12080393 in words is "twelve million, eighty thousand, three hundred ninety-three".

Divisors: 1 13 929261 12080393