155980032 has 144 divisors (see below), whose sum is σ = 473880960. Its totient is φ = 45121536.

The previous prime is 155979983. The next prime is 155980037. The reversal of 155980032 is 230089551.

It is a junction number, because it is equal to n+sod(n) for n = 155979975 and 155980002.

It is not an unprimeable number, because it can be changed into a prime (155980037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169269 + ... + 170187.

It is an arithmetic number, because the mean of its divisors is an integer number (3290840).

Almost surely, 2^155980032 is an apocalyptic number.

155980032 is a gapful number since it is divisible by the number (12) 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 155980032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236940480).

155980032 is an abundant number, since it is smaller than the sum of its proper divisors (317900928).

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

155980032 is a wasteful number, since it uses less digits than its factorization.

155980032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968 (or 954 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 155980032 is about 12489.1966114719. The cubic root of 155980032 is about 538.2982918549.

The spelling of 155980032 in words is "one hundred fifty-five million, nine hundred eighty thousand, thirty-two".