155628 has 48 divisors (see below), whose sum is σ = 443520. Its totient is φ = 46800.

The previous prime is 155627. The next prime is 155653. The reversal of 155628 is 826551.

155628 is nontrivially palindromic in base 8 and base 14.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (155621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1123 + ... + 1253.

It is an arithmetic number, because the mean of its divisors is an integer number (9240).

2¹⁵⁵⁶²⁸ is an apocalyptic number.

155628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221760).

155628 is an abundant number, since it is smaller than the sum of its proper divisors (287892).

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

155628 is a wasteful number, since it uses less digits than its factorization.

155628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 147 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 155628 is about 394.4971482787. The cubic root of 155628 is about 53.7893024248.

The spelling of 155628 in words is "one hundred fifty-five thousand, six hundred twenty-eight".