155988438 has 16 divisors (see below), whose sum is σ = 325541376. Its totient is φ = 49735400.

The previous prime is 155988403. The next prime is 155988467. The reversal of 155988438 is 834889551.

155988438 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 565038 + ... + 565313.

It is an arithmetic number, because the mean of its divisors is an integer number (20346336).

Almost surely, 2^155988438 is an apocalyptic number.

155988438 is an abundant number, since it is smaller than the sum of its proper divisors (169552938).

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

155988438 is a wasteful number, since it uses less digits than its factorization.

155988438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130379.

The product of its digits is 1382400, while the sum is 51.

The square root of 155988438 is about 12489.5331377918. The cubic root of 155988438 is about 538.3079615844.

The spelling of 155988438 in words is "one hundred fifty-five million, nine hundred eighty-eight thousand, four hundred thirty-eight".