13205390 has 16 divisors (see below), whose sum is σ = 25930800. Its totient is φ = 4801920.

The previous prime is 13205363. The next prime is 13205393. The reversal of 13205390 is 9350231.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13205393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59915 + ... + 60134.

It is an arithmetic number, because the mean of its divisors is an integer number (1620675).

Almost surely, 2^13205390 is an apocalyptic number.

13205390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13205390 is a deficient number, since it is larger than the sum of its proper divisors (12725410).

13205390 is a wasteful number, since it uses less digits than its factorization.

13205390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120067.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 13205390 is about 3633.9221235464. The cubic root of 13205390 is about 236.3653132838.

The spelling of 13205390 in words is "thirteen million, two hundred five thousand, three hundred ninety".