155020128 has 24 divisors (see below), whose sum is σ = 406928088. Its totient is φ = 51673344.

The previous prime is 155020097. The next prime is 155020141. The reversal of 155020128 is 821020551.

155020128 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 155020098 and 155020107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 807301 + ... + 807492.

It is an arithmetic number, because the mean of its divisors is an integer number (16955337).

Almost surely, 2^155020128 is an apocalyptic number.

It is an amenable number.

155020128 is an abundant number, since it is smaller than the sum of its proper divisors (251907960).

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

155020128 is a wasteful number, since it uses less digits than its factorization.

155020128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614806 (or 1614798 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 155020128 is about 12450.7079316800. The cubic root of 155020128 is about 537.1917863769.

Adding to 155020128 its reverse (821020551), we get a palindrome (976040679).

The spelling of 155020128 in words is "one hundred fifty-five million, twenty thousand, one hundred twenty-eight".