155560428 has 18 divisors (see below), whose sum is σ = 393222284. Its totient is φ = 51853464.

The previous prime is 155560423. The next prime is 155560451. The reversal of 155560428 is 824065551.

155560428 is a `hidden beast` number, since 1 + 55 + 560 + 42 + 8 = 666.

155560428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4321123 = 155560428 / (1 + 5 + 5 + 5 + 6 + 0 + 4 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 155560392 and 155560401.

It is not an unprimeable number, because it can be changed into a prime (155560423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2160526 + ... + 2160597.

Almost surely, 2^155560428 is an apocalyptic number.

155560428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

155560428 is an abundant number, since it is smaller than the sum of its proper divisors (237661856).

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

155560428 is a wasteful number, since it uses less digits than its factorization.

155560428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4321133 (or 4321128 counting only the distinct ones).

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

The square root of 155560428 is about 12472.3866200499. The cubic root of 155560428 is about 537.8151638601.

The spelling of 155560428 in words is "one hundred fifty-five million, five hundred sixty thousand, four hundred twenty-eight".