155168768 has 52 divisors (see below), whose sum is σ = 317876328. Its totient is φ = 75694080.

The previous prime is 155168747. The next prime is 155168773. The reversal of 155168768 is 867861551.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 175688 + ... + 176568.

Almost surely, 2^155168768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155168768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158938164).

155168768 is an abundant number, since it is smaller than the sum of its proper divisors (162707560).

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

155168768 is an frugal number, since it uses more digits than its factorization.

155168768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948 (or 926 counting only the distinct ones).

The product of its digits is 403200, while the sum is 47.

The square root of 155168768 is about 12456.6756399932. The cubic root of 155168768 is about 537.3634257657.

The spelling of 155168768 in words is "one hundred fifty-five million, one hundred sixty-eight thousand, seven hundred sixty-eight".