13690478 has 16 divisors (see below), whose sum is σ = 21031920. Its totient is φ = 6681600.

The previous prime is 13690477. The next prime is 13690511. The reversal of 13690478 is 87409631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13690477) by changing a digit.

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, 21038 + ... + 21678.

It is an arithmetic number, because the mean of its divisors is an integer number (1314495).

Almost surely, 2^13690478 is an apocalyptic number.

13690478 is a deficient number, since it is larger than the sum of its proper divisors (7341442).

13690478 is a wasteful number, since it uses less digits than its factorization.

13690478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 13690478 is about 3700.0645940308. The cubic root of 13690478 is about 239.2248020538.

The spelling of 13690478 in words is "thirteen million, six hundred ninety thousand, four hundred seventy-eight".