3021240 has 64 divisors (see below), whose sum is σ = 9603360. Its totient is φ = 757760.

The previous prime is 3021173. The next prime is 3021241. The reversal of 3021240 is 421203.

3021240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3021240² = 18255782275200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3021241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1300 + ... + 2780.

Almost surely, 2^3021240 is an apocalyptic number.

3021240 is a gapful number since it is divisible by the number (30) 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 3021240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4801680).

3021240 is an abundant number, since it is smaller than the sum of its proper divisors (6582120).

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

3021240 is a wasteful number, since it uses less digits than its factorization.

3021240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512 (or 1508 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 3021240 is about 1738.1714529931. The cubic root of 3021240 is about 144.5645277987.

Adding to 3021240 its reverse (421203), we get a palindrome (3442443).

The spelling of 3021240 in words is "three million, twenty-one thousand, two hundred forty".