155944768 has 56 divisors (see below), whose sum is σ = 354860352. Its totient is φ = 66607104.

The previous prime is 155944753. The next prime is 155944769. The reversal of 155944768 is 867449551.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155944769) by changing a digit.

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, 262680 + ... + 263272.

It is an arithmetic number, because the mean of its divisors is an integer number (6336792).

Almost surely, 2^155944768 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 155944768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177430176).

155944768 is an abundant number, since it is smaller than the sum of its proper divisors (198915584).

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

155944768 is an equidigital number, since it uses as much as digits as its factorization.

155944768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199 (or 1189 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 49.

The square root of 155944768 is about 12487.7847515082. The cubic root of 155944768 is about 538.2577225986.

The spelling of 155944768 in words is "one hundred fifty-five million, nine hundred forty-four thousand, seven hundred sixty-eight".