7204520 has 64 divisors (see below), whose sum is σ = 17418240. Its totient is φ = 2675200.

The previous prime is 7204517. The next prime is 7204523. The reversal of 7204520 is 254027.

It is an interprime number because it is at equal distance from previous prime (7204517) and next prime (7204523).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 7204492 and 7204501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7204523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37625 + ... + 37815.

It is an arithmetic number, because the mean of its divisors is an integer number (272160).

Almost surely, 2^7204520 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 7204520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8709120).

7204520 is an abundant number, since it is smaller than the sum of its proper divisors (10213720).

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

7204520 is a wasteful number, since it uses less digits than its factorization.

7204520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 7204520 is about 2684.1236931259. The cubic root of 7204520 is about 193.1382759871.

Adding to 7204520 its reverse (254027), we get a palindrome (7458547).

The spelling of 7204520 in words is "seven million, two hundred four thousand, five hundred twenty".