3000816 has 120 divisors (see below), whose sum is σ = 10381280. Its totient is φ = 787968.

The previous prime is 3000797. The next prime is 3000821. The reversal of 3000816 is 6180003.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12990 + ... + 13218.

Almost surely, 2^3000816 is an apocalyptic number.

3000816 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3000816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5190640).

3000816 is an abundant number, since it is smaller than the sum of its proper divisors (7380464).

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

3000816 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (3000815) it forms an eRAP, since the sums of their prime factors are consecutive (262 and 263).

3000816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 3000816 is about 1732.2863504629. The cubic root of 3000816 is about 144.2380322414.

Adding to 3000816 its reverse (6180003), we get a palindrome (9180819).

The spelling of 3000816 in words is "three million, eight hundred sixteen", and thus it is an aban number.