3144478 has 4 divisors (see below), whose sum is σ = 4716720. Its totient is φ = 1572238.

The previous prime is 3144469. The next prime is 3144509. The reversal of 3144478 is 8744413.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 786118 + ... + 786121.

It is an arithmetic number, because the mean of its divisors is an integer number (1179180).

Almost surely, 2^3144478 is an apocalyptic number.

3144478 is a deficient number, since it is larger than the sum of its proper divisors (1572242).

3144478 is a wasteful number, since it uses less digits than its factorization.

3144478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572241.

The product of its digits is 10752, while the sum is 31.

The square root of 3144478 is about 1773.2676052982. The cubic root of 3144478 is about 146.5040127499.

The spelling of 3144478 in words is "three million, one hundred forty-four thousand, four hundred seventy-eight".