155728384 has 40 divisors (see below), whose sum is σ = 355611168. Its totient is φ = 66739200.

The previous prime is 155728367. The next prime is 155728387. The reversal of 155728384 is 483827551.

It is a self number, because there is not a number n which added to its sum of digits gives 155728384.

It is not an unprimeable number, because it can be changed into a prime (155728387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18142 + ... + 25309.

Almost surely, 2^155728384 is an apocalyptic number.

155728384 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

155728384 is an abundant number, since it is smaller than the sum of its proper divisors (199882784).

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

155728384 is an frugal number, since it uses more digits than its factorization.

155728384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43476 (or 43460 counting only the distinct ones).

The product of its digits is 268800, while the sum is 43.

The square root of 155728384 is about 12479.1179175453. The cubic root of 155728384 is about 538.0086509298.

The spelling of 155728384 in words is "one hundred fifty-five million, seven hundred twenty-eight thousand, three hundred eighty-four".