12545390 has 64 divisors (see below), whose sum is σ = 27482112. Its totient is φ = 4060800.

The previous prime is 12545389. The next prime is 12545411. The reversal of 12545390 is 9354521.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44189 + ... + 44471.

It is an arithmetic number, because the mean of its divisors is an integer number (429408).

Almost surely, 2^12545390 is an apocalyptic number.

12545390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12545390 is an abundant number, since it is smaller than the sum of its proper divisors (14936722).

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

12545390 is a wasteful number, since it uses less digits than its factorization.

12545390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 12545390 is about 3541.9472045755. The cubic root of 12545390 is about 232.3600113089.

The spelling of 12545390 in words is "twelve million, five hundred forty-five thousand, three hundred ninety".