3020640 has 192 divisors, whose sum is σ = 11612160. Its totient is φ = 645120.

The previous prime is 3020617. The next prime is 3020651. The reversal of 3020640 is 460203.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97425 + ... + 97455.

It is an arithmetic number, because the mean of its divisors is an integer number (60480).

Almost surely, 2^3020640 is an apocalyptic number.

3020640 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 3020640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5806080).

3020640 is an abundant number, since it is smaller than the sum of its proper divisors (8591520).

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

3020640 is a wasteful number, since it uses less digits than its factorization.

3020640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 3020640 is about 1737.9988492516. The cubic root of 3020640 is about 144.5549572847.

Adding to 3020640 its reverse (460203), we get a palindrome (3480843).

The spelling of 3020640 in words is "three million, twenty thousand, six hundred forty".