7522020 has 144 divisors (see below), whose sum is σ = 25945920. Its totient is φ = 1747200.

The previous prime is 7522003. The next prime is 7522037. The reversal of 7522020 is 202257.

It is a happy number.

7522020 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (7522003) and next prime (7522037).

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

It is a junction number, because it is equal to n+sod(n) for n = 7521984 and 7522002.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57355 + ... + 57485.

It is an arithmetic number, because the mean of its divisors is an integer number (180180).

Almost surely, 2^7522020 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 7522020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12972960).

7522020 is an abundant number, since it is smaller than the sum of its proper divisors (18423900).

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

7522020 is a wasteful number, since it uses less digits than its factorization.

7522020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 7522020 is about 2742.6301245337. The cubic root of 7522020 is about 195.9347624061.

Adding to 7522020 its reverse (202257), we get a palindrome (7724277).

It can be divided in two parts, 752 and 2020, that added together give a palindrome (2772).

The spelling of 7522020 in words is "seven million, five hundred twenty-two thousand, twenty".