13805390 has 16 divisors (see below), whose sum is σ = 25150608. Its totient is φ = 5455296.

The previous prime is 13805371. The next prime is 13805401. The reversal of 13805390 is 9350831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7487 + ... + 9146.

It is an arithmetic number, because the mean of its divisors is an integer number (1571913).

Almost surely, 2^13805390 is an apocalyptic number.

13805390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13805390 is a deficient number, since it is larger than the sum of its proper divisors (11345218).

13805390 is a wasteful number, since it uses less digits than its factorization.

13805390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16723.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 13805390 is about 3715.5605229898. The cubic root of 13805390 is about 239.8922548771.

The spelling of 13805390 in words is "thirteen million, eight hundred five thousand, three hundred ninety".