16078401 has 6 divisors (see below), whose sum is σ = 23224370. Its totient is φ = 10718928.

The previous prime is 16078397. The next prime is 16078409. The reversal of 16078401 is 10487061.

It is a happy number.

16078401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 15397776 + 680625 = 3924^2 + 825^2 .

It is not a de Polignac number, because 16078401 - 2² = 16078397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16078409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 893236 + ... + 893253.

Almost surely, 2^16078401 is an apocalyptic number.

It is an amenable number.

16078401 is a deficient number, since it is larger than the sum of its proper divisors (7145969).

16078401 is a wasteful number, since it uses less digits than its factorization.

16078401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786495 (or 1786492 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 16078401 is about 4009.7881490174. The cubic root of 16078401 is about 252.3951190073.

The spelling of 16078401 in words is "sixteen million, seventy-eight thousand, four hundred one".