7818536 has 48 divisors (see below), whose sum is σ = 16590420. Its totient is φ = 3449600.

The previous prime is 7818469. The next prime is 7818563. The reversal of 7818536 is 6358187.

It can be written as a sum of positive squares in 2 ways, for example, as 7806436 + 12100 = 2794^2 + 110^2 .

It is a super-2 number, since 2×7818536² = 122259010366592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7818536.

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, 39590 + ... + 39786.

Almost surely, 2^7818536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7818536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8295210).

7818536 is an abundant number, since it is smaller than the sum of its proper divisors (8771884).

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

7818536 is a wasteful number, since it uses less digits than its factorization.

7818536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 251 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 7818536 is about 2796.1645159039. The cubic root of 7818536 is about 198.4762199558.

The spelling of 7818536 in words is "seven million, eight hundred eighteen thousand, five hundred thirty-six".