13411978 has 8 divisors (see below), whose sum is σ = 20811780. Its totient is φ = 6474720.

The previous prime is 13411969. The next prime is 13411987. The reversal of 13411978 is 87911431.

It is an interprime number because it is at equal distance from previous prime (13411969) and next prime (13411987).

It can be written as a sum of positive squares in 2 ways, for example, as 11881809 + 1530169 = 3447^2 + 1237^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115563 + ... + 115678.

Almost surely, 2^13411978 is an apocalyptic number.

13411978 is a deficient number, since it is larger than the sum of its proper divisors (7399802).

13411978 is a wasteful number, since it uses less digits than its factorization.

13411978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231272.

The product of its digits is 6048, while the sum is 34.

The square root of 13411978 is about 3662.2367482182. The cubic root of 13411978 is about 237.5915244665.

The spelling of 13411978 in words is "thirteen million, four hundred eleven thousand, nine hundred seventy-eight".