155416320 has 180 divisors, whose sum is σ = 556479000. Its totient is φ = 41416704.

The previous prime is 155416301. The next prime is 155416337. The reversal of 155416320 is 23614551.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (27).

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 19 ways as a sum of consecutive naturals, for example, 102931 + ... + 104429.

It is an arithmetic number, because the mean of its divisors is an integer number (3091550).

Almost surely, 2^155416320 is an apocalyptic number.

155416320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155416320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278239500).

155416320 is an abundant number, since it is smaller than the sum of its proper divisors (401062680).

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

155416320 is an equidigital number, since it uses as much as digits as its factorization.

155416320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532 (or 1509 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 155416320 is about 12466.6081995064. The cubic root of 155416320 is about 537.6490388940.

The spelling of 155416320 in words is "one hundred fifty-five million, four hundred sixteen thousand, three hundred twenty".