7205620 has 24 divisors (see below), whose sum is σ = 16022664. Its totient is φ = 2712576.

The previous prime is 7205587. The next prime is 7205629. The reversal of 7205620 is 265027.

It can be written as a sum of positive squares in 4 ways, for example, as 204304 + 7001316 = 452^2 + 2646^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7205591 and 7205600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7205629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10257 + ... + 10936.

It is an arithmetic number, because the mean of its divisors is an integer number (667611).

Almost surely, 2^7205620 is an apocalyptic number.

It is an amenable number.

7205620 is an abundant number, since it is smaller than the sum of its proper divisors (8817044).

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

7205620 is a wasteful number, since it uses less digits than its factorization.

7205620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21219 (or 21217 counting only the distinct ones).

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

The square root of 7205620 is about 2684.3285938946. The cubic root of 7205620 is about 193.1481050616.

The spelling of 7205620 in words is "seven million, two hundred five thousand, six hundred twenty".