3220878 has 16 divisors (see below), whose sum is σ = 6599376. Its totient is φ = 1047360.

The previous prime is 3220873. The next prime is 3220879. The reversal of 3220878 is 8780223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6301 + ... + 6792.

It is an arithmetic number, because the mean of its divisors is an integer number (412461).

Almost surely, 2^3220878 is an apocalyptic number.

3220878 is an abundant number, since it is smaller than the sum of its proper divisors (3378498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3220878 is a wasteful number, since it uses less digits than its factorization.

3220878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13139.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 3220878 is about 1794.6804729533. The cubic root of 3220878 is about 147.6810455238.

It can be divided in two parts, 32 and 20878, that added together give a triangular number (20910 = T₂₀₄).

The spelling of 3220878 in words is "three million, two hundred twenty thousand, eight hundred seventy-eight".