7218254 has 8 divisors (see below), whose sum is σ = 10855848. Its totient is φ = 3599640.

The previous prime is 7218247. The next prime is 7218259. The reversal of 7218254 is 4528127.

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

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7218259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3752 + ... + 5339.

It is an arithmetic number, because the mean of its divisors is an integer number (1356981).

Almost surely, 2^7218254 is an apocalyptic number.

7218254 is a deficient number, since it is larger than the sum of its proper divisors (3637594).

7218254 is a wasteful number, since it uses less digits than its factorization.

7218254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9490.

The product of its digits is 4480, while the sum is 29.

The square root of 7218254 is about 2686.6808519063. The cubic root of 7218254 is about 193.2609247935.

The spelling of 7218254 in words is "seven million, two hundred eighteen thousand, two hundred fifty-four".