155405268 has 36 divisors (see below), whose sum is σ = 401969568. Its totient is φ = 50596560.

The previous prime is 155405249. The next prime is 155405309. The reversal of 155405268 is 862504551.

155405268 is a `hidden beast` number, since 1 + 5 + 540 + 52 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 48648 + ... + 51743.

Almost surely, 2^155405268 is an apocalyptic number.

155405268 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

155405268 is an abundant number, since it is smaller than the sum of its proper divisors (246564300).

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

155405268 is a wasteful number, since it uses less digits than its factorization.

155405268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100444 (or 100439 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 155405268 is about 12466.1649275148. The cubic root of 155405268 is about 537.6362941191.

The spelling of 155405268 in words is "one hundred fifty-five million, four hundred five thousand, two hundred sixty-eight".