7207420 has 36 divisors (see below), whose sum is σ = 16603272. Its totient is φ = 2606400.

The previous prime is 7207411. The next prime is 7207427. The reversal of 7207420 is 247027.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 7207391 and 7207400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7207427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39730 + ... + 39910.

It is an arithmetic number, because the mean of its divisors is an integer number (461202).

Almost surely, 2^7207420 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 7207420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8301636).

7207420 is an abundant number, since it is smaller than the sum of its proper divisors (9395852).

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

7207420 is a wasteful number, since it uses less digits than its factorization.

7207420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 7207420 is about 2684.6638523286. The cubic root of 7207420 is about 193.1641868443.

The spelling of 7207420 in words is "seven million, two hundred seven thousand, four hundred twenty".