12049578 has 24 divisors (see below), whose sum is σ = 26664768. Its totient is φ = 3930792.

The previous prime is 12049573. The next prime is 12049601. The reversal of 12049578 is 87594021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12049571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6276 + ... + 7967.

It is an arithmetic number, because the mean of its divisors is an integer number (1111032).

Almost surely, 2^12049578 is an apocalyptic number.

12049578 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12049578 is an abundant number, since it is smaller than the sum of its proper divisors (14615190).

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

12049578 is a wasteful number, since it uses less digits than its factorization.

12049578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14298 (or 14295 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 12049578 is about 3471.2502070580. The cubic root of 12049578 is about 229.2577077538.

The spelling of 12049578 in words is "twelve million, forty-nine thousand, five hundred seventy-eight".