155838830 has 32 divisors (see below), whose sum is σ = 339443136. Its totient is φ = 50287104.

The previous prime is 155838773. The next prime is 155838841. The reversal of 155838830 is 38838551.

155838830 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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64289 + ... + 66668.

It is an arithmetic number, because the mean of its divisors is an integer number (10607598).

Almost surely, 2^155838830 is an apocalyptic number.

155838830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155838830 is an abundant number, since it is smaller than the sum of its proper divisors (183604306).

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

155838830 is a wasteful number, since it uses less digits than its factorization.

155838830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130988.

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 155838830 is about 12483.5423658511. The cubic root of 155838830 is about 538.1358100684.

The spelling of 155838830 in words is "one hundred fifty-five million, eight hundred thirty-eight thousand, eight hundred thirty".