3012840 has 48 divisors (see below), whose sum is σ = 9792900. Its totient is φ = 803328.

The previous prime is 3012827. The next prime is 3012871. The reversal of 3012840 is 482103.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3006756 + 6084 = 1734^2 + 78^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3825 + ... + 4544.

Almost surely, 2^3012840 is an apocalyptic number.

3012840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3012840 is an abundant number, since it is smaller than the sum of its proper divisors (6780060).

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

3012840 is a wasteful number, since it uses less digits than its factorization.

3012840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8386 (or 8379 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 3012840 is about 1735.7534387118. The cubic root of 3012840 is about 144.4304251132.

Adding to 3012840 its reverse (482103), we get a palindrome (3494943).

The spelling of 3012840 in words is "three million, twelve thousand, eight hundred forty".