155424228 has 24 divisors (see below), whose sum is σ = 364832832. Its totient is φ = 51497184.

The previous prime is 155424221. The next prime is 155424229. The reversal of 155424228 is 822424551.

It is not an unprimeable number, because it can be changed into a prime (155424221) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 36775 + ... + 40782.

It is an arithmetic number, because the mean of its divisors is an integer number (15201368).

Almost surely, 2^155424228 is an apocalyptic number.

It is an amenable number.

155424228 is an abundant number, since it is smaller than the sum of its proper divisors (209408604).

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

155424228 is a wasteful number, since it uses less digits than its factorization.

155424228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77731 (or 77729 counting only the distinct ones).

The product of its digits is 25600, while the sum is 33.

The square root of 155424228 is about 12466.9253627348. The cubic root of 155424228 is about 537.6581577486.

Adding to 155424228 its reverse (822424551), we get a palindrome (977848779).

The spelling of 155424228 in words is "one hundred fifty-five million, four hundred twenty-four thousand, two hundred twenty-eight".