155828 has 12 divisors (see below), whose sum is σ = 275520. Its totient is φ = 77112.

The previous prime is 155821. The next prime is 155833. The reversal of 155828 is 828551.

It is a self number, because there is not a number n which added to its sum of digits gives 155828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533 + ... + 771.

It is an arithmetic number, because the mean of its divisors is an integer number (22960).

2¹⁵⁵⁸²⁸ is an apocalyptic number.

It is an amenable number.

155828 is a deficient number, since it is larger than the sum of its proper divisors (119692).

155828 is a wasteful number, since it uses less digits than its factorization.

155828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 404 counting only the distinct ones).

The product of its digits is 3200, while the sum is 29.

The square root of 155828 is about 394.7505541478. The cubic root of 155828 is about 53.8123343886.

Subtracting from 155828 its product of digits (3200), we obtain a triangular number (152628 = T₅₅₂).

The spelling of 155828 in words is "one hundred fifty-five thousand, eight hundred twenty-eight".