155999448 has 96 divisors (see below), whose sum is σ = 468608400. Its totient is φ = 46483200.

The previous prime is 155999447. The next prime is 155999453. The reversal of 155999448 is 844999551.

155999448 is a `hidden beast` number, since 1 + 5 + 599 + 9 + 4 + 48 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 155999394 and 155999403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155999447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46698 + ... + 49926.

Almost surely, 2^155999448 is an apocalyptic number.

155999448 is a gapful number since it is divisible by the number (18) 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 155999448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234304200).

155999448 is an abundant number, since it is smaller than the sum of its proper divisors (312608952).

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

155999448 is a wasteful number, since it uses less digits than its factorization.

155999448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313 (or 3306 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 54.

The square root of 155999448 is about 12489.9738990920. The cubic root of 155999448 is about 538.3206262650.

The spelling of 155999448 in words is "one hundred fifty-five million, nine hundred ninety-nine thousand, four hundred forty-eight".