7228780 has 24 divisors (see below), whose sum is σ = 16348752. Its totient is φ = 2668992.

The previous prime is 7228769. The next prime is 7228783. The reversal of 7228780 is 878227.

It is not an unprimeable number, because it can be changed into a prime (7228783) by changing a digit.

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, 13642 + ... + 14161.

It is an arithmetic number, because the mean of its divisors is an integer number (681198).

Almost surely, 2^7228780 is an apocalyptic number.

It is an amenable number.

7228780 is an abundant number, since it is smaller than the sum of its proper divisors (9119972).

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

7228780 is a wasteful number, since it uses less digits than its factorization.

7228780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27825 (or 27823 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 7228780 is about 2688.6390609377. The cubic root of 7228780 is about 193.3548199134.

It can be divided in two parts, 7228 and 780, that added together give a palindrome (8008).

The spelling of 7228780 in words is "seven million, two hundred twenty-eight thousand, seven hundred eighty".