155881344 has 64 divisors (see below), whose sum is σ = 424201680. Its totient is φ = 50688000.

The previous prime is 155881343. The next prime is 155881379. The reversal of 155881344 is 443188551.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155881343) 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, 10794 + ... + 20694.

Almost surely, 2^155881344 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 155881344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212100840).

155881344 is an abundant number, since it is smaller than the sum of its proper divisors (268320336).

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

155881344 is an equidigital number, since it uses as much as digits as its factorization.

155881344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9959 (or 9947 counting only the distinct ones).

The product of its digits is 76800, while the sum is 39.

The square root of 155881344 is about 12485.2450516600. The cubic root of 155881344 is about 538.1847414455.

The spelling of 155881344 in words is "one hundred fifty-five million, eight hundred eighty-one thousand, three hundred forty-four".