155944384 has 56 divisors (see below), whose sum is σ = 323624448. Its totient is φ = 74469120.

The previous prime is 155944367. The next prime is 155944387. The reversal of 155944384 is 483449551.

It is a super-4 number, since 4×155944384⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 155944384.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155944387) 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, 164199 + ... + 165145.

It is an arithmetic number, because the mean of its divisors is an integer number (5779008).

Almost surely, 2^155944384 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 155944384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161812224).

155944384 is an abundant number, since it is smaller than the sum of its proper divisors (167680064).

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

155944384 is an equidigital number, since it uses as much as digits as its factorization.

155944384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073 (or 1063 counting only the distinct ones).

The product of its digits is 345600, while the sum is 43.

The square root of 155944384 is about 12487.7693764739. The cubic root of 155944384 is about 538.2572807945.

The spelling of 155944384 in words is "one hundred fifty-five million, nine hundred forty-four thousand, three hundred eighty-four".