7218082 has 4 divisors (see below), whose sum is σ = 10827126. Its totient is φ = 3609040.

The previous prime is 7218059. The next prime is 7218083. The reversal of 7218082 is 2808127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2808127 = 7 ⋅401161.

It can be written as a sum of positive squares in only one way, i.e., 4661281 + 2556801 = 2159^2 + 1599^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7218082.

It is not an unprimeable number, because it can be changed into a prime (7218083) 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 as a sum of consecutive naturals, namely, 1804519 + ... + 1804522.

Almost surely, 2^7218082 is an apocalyptic number.

7218082 is a deficient number, since it is larger than the sum of its proper divisors (3609044).

7218082 is a wasteful number, since it uses less digits than its factorization.

7218082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3609043.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 7218082 is about 2686.6488419591. The cubic root of 7218082 is about 193.2593897435.

It can be divided in two parts, 7 and 218082, that added together give a square (218089 = 467²).

The spelling of 7218082 in words is "seven million, two hundred eighteen thousand, eighty-two".