7620520 has 64 divisors (see below), whose sum is σ = 18604800. Its totient is φ = 2799360.

The previous prime is 7620497. The next prime is 7620523. The reversal of 7620520 is 250267.

It is a junction number, because it is equal to n+sod(n) for n = 7620491 and 7620500.

It is not an unprimeable number, because it can be changed into a prime (7620523) 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, 27985 + ... + 28255.

It is an arithmetic number, because the mean of its divisors is an integer number (290700).

Almost surely, 2^7620520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7620520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9302400).

7620520 is an abundant number, since it is smaller than the sum of its proper divisors (10984280).

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

7620520 is a wasteful number, since it uses less digits than its factorization.

7620520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 7620520 is about 2760.5289348239. The cubic root of 7620520 is about 196.7863040461.

Adding to 7620520 its reverse (250267), we get a palindrome (7870787).

The spelling of 7620520 in words is "seven million, six hundred twenty thousand, five hundred twenty".