428618727 has 12 divisors (see below), whose sum is σ = 621473424. Its totient is φ = 284657760.

The previous prime is 428618719. The next prime is 428618759. The reversal of 428618727 is 727816824.

428618727 is a `hidden beast` number, since 4 + 2 + 8 + 618 + 7 + 27 = 666.

It is not a de Polignac number, because 428618727 - 2³ = 428618719 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428618227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88174 + ... + 92907.

It is an arithmetic number, because the mean of its divisors is an integer number (51789452).

Almost surely, 2^428618727 is an apocalyptic number.

428618727 is a deficient number, since it is larger than the sum of its proper divisors (192854697).

428618727 is a wasteful number, since it uses less digits than its factorization.

428618727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181350 (or 181347 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 428618727 is about 20703.1091143335. The cubic root of 428618727 is about 753.9751760760.

The spelling of 428618727 in words is "four hundred twenty-eight million, six hundred eighteen thousand, seven hundred twenty-seven".