13040394 has 32 divisors (see below), whose sum is σ = 27812160. Its totient is φ = 4061952.

The previous prime is 13040381. The next prime is 13040449. The reversal of 13040394 is 49304031.

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 15 ways as a sum of consecutive naturals, for example, 17277 + ... + 18015.

It is an arithmetic number, because the mean of its divisors is an integer number (869130).

Almost surely, 2^13040394 is an apocalyptic number.

13040394 is an abundant number, since it is smaller than the sum of its proper divisors (14771766).

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

13040394 is a wasteful number, since it uses less digits than its factorization.

13040394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 13040394 is about 3611.1485707459. The cubic root of 13040394 is about 235.3767549467.

The spelling of 13040394 in words is "thirteen million, forty thousand, three hundred ninety-four".