13040390 has 16 divisors (see below), whose sum is σ = 25606800. Its totient is φ = 4741920.

The previous prime is 13040381. The next prime is 13040449. The reversal of 13040390 is 9304031.

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, 59165 + ... + 59384.

It is an arithmetic number, because the mean of its divisors is an integer number (1600425).

Almost surely, 2^13040390 is an apocalyptic number.

13040390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13040390 is a deficient number, since it is larger than the sum of its proper divisors (12566410).

13040390 is a wasteful number, since it uses less digits than its factorization.

13040390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118567.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 13040390 is about 3611.1480169054. The cubic root of 13040390 is about 235.3767308803.

The spelling of 13040390 in words is "thirteen million, forty thousand, three hundred ninety".