13541978 has 8 divisors (see below), whose sum is σ = 20968320. Its totient is φ = 6552540.

The previous prime is 13541971. The next prime is 13541981. The reversal of 13541978 is 87914531.

13541978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13541971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109148 + ... + 109271.

It is an arithmetic number, because the mean of its divisors is an integer number (2621040).

Almost surely, 2^13541978 is an apocalyptic number.

13541978 is a deficient number, since it is larger than the sum of its proper divisors (7426342).

13541978 is a wasteful number, since it uses less digits than its factorization.

13541978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218452.

The product of its digits is 30240, while the sum is 38.

The square root of 13541978 is about 3679.9426625968. The cubic root of 13541978 is about 238.3567021386.

The spelling of 13541978 in words is "thirteen million, five hundred forty-one thousand, nine hundred seventy-eight".