800156 has 36 divisors (see below), whose sum is σ = 1736784. Its totient is φ = 314880.

The previous prime is 800143. The next prime is 800159. The reversal of 800156 is 651008.

800156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800159) by changing a digit.

800156 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19496 + ... + 19536.

It is an arithmetic number, because the mean of its divisors is an integer number (48244).

2⁸⁰⁰¹⁵⁶ 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 800156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (868392).

800156 is an abundant number, since it is smaller than the sum of its proper divisors (936628).

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

800156 is a wasteful number, since it uses less digits than its factorization.

800156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 800156 is about 894.5143934001. The cubic root of 800156 is about 92.8378103456.

The spelling of 800156 in words is "eight hundred thousand, one hundred fifty-six".