3220478 has 4 divisors (see below), whose sum is σ = 4830720. Its totient is φ = 1610238.

The previous prime is 3220471. The next prime is 3220499. The reversal of 3220478 is 8740223.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220471) 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 as a sum of consecutive naturals, namely, 805118 + ... + 805121.

It is an arithmetic number, because the mean of its divisors is an integer number (1207680).

Almost surely, 2^3220478 is an apocalyptic number.

3220478 is a deficient number, since it is larger than the sum of its proper divisors (1610242).

3220478 is a wasteful number, since it uses less digits than its factorization.

3220478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610241.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 3220478 is about 1794.5690290429. The cubic root of 3220478 is about 147.6749317805.

The spelling of 3220478 in words is "three million, two hundred twenty thousand, four hundred seventy-eight".