7240220 has 24 divisors (see below), whose sum is σ = 16374624. Its totient is φ = 2673216.

The previous prime is 7240201. The next prime is 7240241. The reversal of 7240220 is 220427.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13664 + ... + 14183.

It is an arithmetic number, because the mean of its divisors is an integer number (682276).

Almost surely, 2^7240220 is an apocalyptic number.

It is an amenable number.

7240220 is an abundant number, since it is smaller than the sum of its proper divisors (9134404).

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

7240220 is a wasteful number, since it uses less digits than its factorization.

7240220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27869 (or 27867 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 7240220 is about 2690.7656902822. The cubic root of 7240220 is about 193.4567648843.

Adding to 7240220 its reverse (220427), we get a palindrome (7460647).

The spelling of 7240220 in words is "seven million, two hundred forty thousand, two hundred twenty".