7218012 has 24 divisors (see below), whose sum is σ = 17047296. Its totient is φ = 2376688.

The previous prime is 7217963. The next prime is 7218019. The reversal of 7218012 is 2108127.

7218012 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 7218012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7218019) 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, 2628 + ... + 4619.

It is an arithmetic number, because the mean of its divisors is an integer number (710304).

Almost surely, 2^7218012 is an apocalyptic number.

It is an amenable number.

7218012 is an abundant number, since it is smaller than the sum of its proper divisors (9829284).

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

7218012 is a wasteful number, since it uses less digits than its factorization.

7218012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7337 (or 7335 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 7218012 is about 2686.6358145458. The cubic root of 7218012 is about 193.2587650069.

The spelling of 7218012 in words is "seven million, two hundred eighteen thousand, twelve".