3128216 has 32 divisors (see below), whose sum is σ = 7220640. Its totient is φ = 1237248.

The previous prime is 3128197. The next prime is 3128227. The reversal of 3128216 is 6128213.

It is a junction number, because it is equal to n+sod(n) for n = 3128191 and 3128200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1421 + ... + 2876.

It is an arithmetic number, because the mean of its divisors is an integer number (225645).

Almost surely, 2^3128216 is an apocalyptic number.

It is an amenable number.

3128216 is an abundant number, since it is smaller than the sum of its proper divisors (4092424).

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

3128216 is a wasteful number, since it uses less digits than its factorization.

3128216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4323 (or 4319 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 3128216 is about 1768.6763412224. The cubic root of 3128216 is about 146.2510224683.

The spelling of 3128216 in words is "three million, one hundred twenty-eight thousand, two hundred sixteen".