155448384 has 336 divisors, whose sum is σ = 544836096. Its totient is φ = 38707200.

The previous prime is 155448383. The next prime is 155448389. The reversal of 155448384 is 483844551.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (336).

It is a super-2 number, since 2×155448384² = 48328400176422912, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155448383) 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 47 ways as a sum of consecutive naturals, for example, 3791404 + ... + 3791444.

It is an arithmetic number, because the mean of its divisors is an integer number (1621536).

Almost surely, 2^155448384 is an apocalyptic number.

155448384 is a gapful number since it is divisible by the number (14) 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 155448384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272418048).

155448384 is an abundant number, since it is smaller than the sum of its proper divisors (389387712).

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

155448384 is a wasteful number, since it uses less digits than its factorization.

155448384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 97 counting only the distinct ones).

The product of its digits is 307200, while the sum is 42.

The square root of 155448384 is about 12467.8941285207. The cubic root of 155448384 is about 537.6860105440.

The spelling of 155448384 in words is "one hundred fifty-five million, four hundred forty-eight thousand, three hundred eighty-four".