12255538 has 8 divisors (see below), whose sum is σ = 19464732. Its totient is φ = 5767296.

The previous prime is 12255533. The next prime is 12255587. The reversal of 12255538 is 83555221.

It can be written as a sum of positive squares in 2 ways, for example, as 11992369 + 263169 = 3463^2 + 513^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12255533) 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, 180195 + ... + 180262.

Almost surely, 2^12255538 is an apocalyptic number.

12255538 is a deficient number, since it is larger than the sum of its proper divisors (7209194).

12255538 is a wasteful number, since it uses less digits than its factorization.

12255538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360476.

The product of its digits is 12000, while the sum is 31.

The square root of 12255538 is about 3500.7910534621. The cubic root of 12255538 is about 230.5565475955.

The spelling of 12255538 in words is "twelve million, two hundred fifty-five thousand, five hundred thirty-eight".