3219816 has 64 divisors (see below), whose sum is σ = 8870400. Its totient is φ = 969408.

The previous prime is 3219787. The next prime is 3219847. The reversal of 3219816 is 6189123.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10335 + ... + 10641.

It is an arithmetic number, because the mean of its divisors is an integer number (138600).

Almost surely, 2^3219816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3219816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4435200).

3219816 is an abundant number, since it is smaller than the sum of its proper divisors (5650584).

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

3219816 is a wasteful number, since it uses less digits than its factorization.

3219816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 354 counting only the distinct ones).

The product of its digits is 2592, while the sum is 30.

The square root of 3219816 is about 1794.3845741646. The cubic root of 3219816 is about 147.6648124230.

The spelling of 3219816 in words is "three million, two hundred nineteen thousand, eight hundred sixteen".