155404128 has 48 divisors (see below), whose sum is σ = 445023936. Its totient is φ = 47091840.

The previous prime is 155404111. The next prime is 155404153. The reversal of 155404128 is 821404551.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 155404095 and 155404104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72526 + ... + 74637.

It is an arithmetic number, because the mean of its divisors is an integer number (9271332).

Almost surely, 2^155404128 is an apocalyptic number.

It is an amenable number.

155404128 is an abundant number, since it is smaller than the sum of its proper divisors (289619808).

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

155404128 is a wasteful number, since it uses less digits than its factorization.

155404128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147187 (or 147179 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 155404128 is about 12466.1192036656. The cubic root of 155404128 is about 537.6349794771.

Adding to 155404128 its reverse (821404551), we get a palindrome (976808679).

The spelling of 155404128 in words is "one hundred fifty-five million, four hundred four thousand, one hundred twenty-eight".