3218828 has 24 divisors (see below), whose sum is σ = 6079920. Its totient is φ = 1486080.

The previous prime is 3218819. The next prime is 3218837. The reversal of 3218828 is 8288123.

It is an interprime number because it is at equal distance from previous prime (3218819) and next prime (3218837).

It is a junction number, because it is equal to n+sod(n) for n = 3218794 and 3218803.

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, 2600 + ... + 3632.

It is an arithmetic number, because the mean of its divisors is an integer number (253330).

Almost surely, 2^3218828 is an apocalyptic number.

3218828 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

3218828 is a deficient number, since it is larger than the sum of its proper divisors (2861092).

3218828 is a wasteful number, since it uses less digits than its factorization.

3218828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097 (or 1095 counting only the distinct ones).

The product of its digits is 6144, while the sum is 32.

The square root of 3218828 is about 1794.1092497393. The cubic root of 3218828 is about 147.6497072369.

The spelling of 3218828 in words is "three million, two hundred eighteen thousand, eight hundred twenty-eight".