7122280 has 32 divisors (see below), whose sum is σ = 17483040. Its totient is φ = 2589760.

The previous prime is 7122263. The next prime is 7122289. The reversal of 7122280 is 822217.

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

It is not an unprimeable number, because it can be changed into a prime (7122289) 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, 7654 + ... + 8533.

It is an arithmetic number, because the mean of its divisors is an integer number (546345).

Almost surely, 2^7122280 is an apocalyptic number.

It is an amenable number.

7122280 is an abundant number, since it is smaller than the sum of its proper divisors (10360760).

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

7122280 is a wasteful number, since it uses less digits than its factorization.

7122280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16209 (or 16205 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 7122280 is about 2668.7600116908. The cubic root of 7122280 is about 192.4005670775.

Adding to 7122280 its reverse (822217), we get a palindrome (7944497).

It can be divided in two parts, 712 and 2280, that added together give a palindrome (2992).

The spelling of 7122280 in words is "seven million, one hundred twenty-two thousand, two hundred eighty".