8118390 has 64 divisors (see below), whose sum is σ = 22639104. Its totient is φ = 1824768.

The previous prime is 8118359. The next prime is 8118391. The reversal of 8118390 is 938118.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8118391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13782 + ... + 14358.

It is an arithmetic number, because the mean of its divisors is an integer number (353736).

Almost surely, 2^8118390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8118390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11319552).

8118390 is an abundant number, since it is smaller than the sum of its proper divisors (14520714).

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

8118390 is a wasteful number, since it uses less digits than its factorization.

8118390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 8118390 is about 2849.2788561318. The cubic root of 8118390 is about 200.9817562214.

The spelling of 8118390 in words is "eight million, one hundred eighteen thousand, three hundred ninety".