8158356 has 18 divisors (see below), whose sum is σ = 20622602. Its totient is φ = 2719440.

The previous prime is 8158333. The next prime is 8158373. The reversal of 8158356 is 6538518.

It can be written as a sum of positive squares in only one way, i.e., 6170256 + 1988100 = 2484^2 + 1410^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 226621 = 8158356 / (8 + 1 + 5 + 8 + 3 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 8158356.

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 5 ways as a sum of consecutive naturals, for example, 113275 + ... + 113346.

Almost surely, 2^8158356 is an apocalyptic number.

It is an amenable number.

8158356 is an abundant number, since it is smaller than the sum of its proper divisors (12464246).

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

8158356 is a wasteful number, since it uses less digits than its factorization.

8158356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226631 (or 226626 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 8158356 is about 2856.2835993647. The cubic root of 8158356 is about 201.3110206793.

The spelling of 8158356 in words is "eight million, one hundred fifty-eight thousand, three hundred fifty-six".