7138206 has 40 divisors (see below), whose sum is σ = 16160760. Its totient is φ = 2354832.

The previous prime is 7138193. The next prime is 7138207. The reversal of 7138206 is 6028317.

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 7138206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7138207) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22360 + ... + 22676.

It is an arithmetic number, because the mean of its divisors is an integer number (404019).

Almost surely, 2^7138206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7138206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8080380).

7138206 is an abundant number, since it is smaller than the sum of its proper divisors (9022554).

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

7138206 is a wasteful number, since it uses less digits than its factorization.

7138206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 461 counting only the distinct ones).

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

The square root of 7138206 is about 2671.7421282751. The cubic root of 7138206 is about 192.5438681155.

The spelling of 7138206 in words is "seven million, one hundred thirty-eight thousand, two hundred six".