2520622720 has 192 divisors, whose sum is σ = 7647968160. Its totient is φ = 785541120.

The previous prime is 2520622703. The next prime is 2520622729. The reversal of 2520622720 is 272260252.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520622729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 341307 + ... + 348613.

Almost surely, 2^2520622720 is an apocalyptic number.

2520622720 is a gapful number since it is divisible by the number (20) 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 2520622720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3823984080).

2520622720 is an abundant number, since it is smaller than the sum of its proper divisors (5127345440).

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

2520622720 is a wasteful number, since it uses less digits than its factorization.

2520622720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7351 (or 7332 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 2520622720 is about 50205.8036485823. The cubic root of 2520622720 is about 1360.9305050765.

Adding to 2520622720 its reverse (272260252), we get a palindrome (2792882972).

The spelling of 2520622720 in words is "two billion, five hundred twenty million, six hundred twenty-two thousand, seven hundred twenty".