7264220 has 12 divisors (see below), whose sum is σ = 15254904. Its totient is φ = 2905680.

The previous prime is 7264217. The next prime is 7264237. The reversal of 7264220 is 224627.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181586 + ... + 181625.

It is an arithmetic number, because the mean of its divisors is an integer number (1271242).

Almost surely, 2^7264220 is an apocalyptic number.

It is an amenable number.

7264220 is an abundant number, since it is smaller than the sum of its proper divisors (7990684).

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

7264220 is a wasteful number, since it uses less digits than its factorization.

7264220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363220 (or 363218 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 7264220 is about 2695.2216977458. The cubic root of 7264220 is about 193.6702870146.

Adding to 7264220 its reverse (224627), we get a palindrome (7488847).

The spelling of 7264220 in words is "seven million, two hundred sixty-four thousand, two hundred twenty".