7224881 has 8 divisors (see below), whose sum is σ = 7719624. Its totient is φ = 6737920.

The previous prime is 7224869. The next prime is 7224911. The reversal of 7224881 is 1884227.

It can be written as a sum of positive squares in 4 ways, for example, as 250000 + 6974881 = 500^2 + 2641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7224881 is a prime.

It is a super-2 number, since 2×7224881² = 104397810928322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7224181) 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, 41 + ... + 3801.

It is an arithmetic number, because the mean of its divisors is an integer number (964953).

Almost surely, 2^7224881 is an apocalyptic number.

It is an amenable number.

7224881 is a deficient number, since it is larger than the sum of its proper divisors (494743).

7224881 is a wasteful number, since it uses less digits than its factorization.

7224881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3891.

The product of its digits is 7168, while the sum is 32.

The square root of 7224881 is about 2687.9138751084. The cubic root of 7224881 is about 193.3200502831.

The spelling of 7224881 in words is "seven million, two hundred twenty-four thousand, eight hundred eighty-one".