7813206 has 32 divisors (see below), whose sum is σ = 17791200. Its totient is φ = 2540160.

The previous prime is 7813181. The next prime is 7813213. The reversal of 7813206 is 6023187.

It is a super-2 number, since 2×7813206² = 122092375996872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 7813206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450 + ... + 3978.

It is an arithmetic number, because the mean of its divisors is an integer number (555975).

Almost surely, 2^7813206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7813206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8895600).

7813206 is an abundant number, since it is smaller than the sum of its proper divisors (9977994).

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

7813206 is a wasteful number, since it uses less digits than its factorization.

7813206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581 (or 3575 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 7813206 is about 2795.2112621410. The cubic root of 7813206 is about 198.4311084101.

The spelling of 7813206 in words is "seven million, eight hundred thirteen thousand, two hundred six".