7218486 has 24 divisors (see below), whose sum is σ = 17062344. Its totient is φ = 2187360.

The previous prime is 7218479. The next prime is 7218503. The reversal of 7218486 is 6848127.

It is a self number, because there is not a number n which added to its sum of digits gives 7218486.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18031 + ... + 18426.

It is an arithmetic number, because the mean of its divisors is an integer number (710931).

Almost surely, 2^7218486 is an apocalyptic number.

7218486 is an abundant number, since it is smaller than the sum of its proper divisors (9843858).

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

7218486 is a wasteful number, since it uses less digits than its factorization.

7218486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36476 (or 36473 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 7218486 is about 2686.7240275101. The cubic root of 7218486 is about 193.2629952875.

The spelling of 7218486 in words is "seven million, two hundred eighteen thousand, four hundred eighty-six".