820150 has 24 divisors (see below), whose sum is σ = 1562400. Its totient is φ = 320160.

The previous prime is 820133. The next prime is 820163. The reversal of 820150 is 51028.

It is a happy number.

820150 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

820150 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, 2176 + ... + 2524.

It is an arithmetic number, because the mean of its divisors is an integer number (65100).

2⁸²⁰¹⁵⁰ is an apocalyptic number.

820150 is a deficient number, since it is larger than the sum of its proper divisors (742250).

820150 is a wasteful number, since it uses less digits than its factorization.

820150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 820150 is about 905.6213336710. The cubic root of 820150 is about 93.6047231405.

Adding to 820150 its reverse (51028), we get a palindrome (871178).

The spelling of 820150 in words is "eight hundred twenty thousand, one hundred fifty".