7224978 has 16 divisors (see below), whose sum is σ = 15210720. Its totient is φ = 2281536.

The previous prime is 7224947. The next prime is 7225007. The reversal of 7224978 is 8794227.

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, 31575 + ... + 31802.

It is an arithmetic number, because the mean of its divisors is an integer number (950670).

Almost surely, 2^7224978 is an apocalyptic number.

7224978 is an abundant number, since it is smaller than the sum of its proper divisors (7985742).

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

7224978 is a wasteful number, since it uses less digits than its factorization.

7224978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63401.

The product of its digits is 56448, while the sum is 39.

The square root of 7224978 is about 2687.9319187807. The cubic root of 7224978 is about 193.3209154397.

It can be divided in two parts, 72249 and 78, that added together give a palindrome (72327).

The spelling of 7224978 in words is "seven million, two hundred twenty-four thousand, nine hundred seventy-eight".