155956040 has 64 divisors (see below), whose sum is σ = 364815360. Its totient is φ = 59938560.

The previous prime is 155956039. The next prime is 155956043. The reversal of 155956040 is 40659551.

It is not an unprimeable number, because it can be changed into a prime (155956043) 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 15 ways as a sum of consecutive naturals, for example, 214157 + ... + 214883.

It is an arithmetic number, because the mean of its divisors is an integer number (5700240).

Almost surely, 2^155956040 is an apocalyptic number.

155956040 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 155956040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182407680).

155956040 is an abundant number, since it is smaller than the sum of its proper divisors (208859320).

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

155956040 is a wasteful number, since it uses less digits than its factorization.

155956040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942 (or 938 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 155956040 is about 12488.2360643928. The cubic root of 155956040 is about 538.2706910680.

The spelling of 155956040 in words is "one hundred fifty-five million, nine hundred fifty-six thousand, forty".