428217027 has 12 divisors (see below), whose sum is σ = 664173576. Its totient is φ = 244695360.

The previous prime is 428217001. The next prime is 428217037. The reversal of 428217027 is 720712824.

It is not a de Polignac number, because 428217027 - 2⁶ = 428216963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428217037) 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, 1456374 + ... + 1456667.

It is an arithmetic number, because the mean of its divisors is an integer number (55347798).

Almost surely, 2^428217027 is an apocalyptic number.

428217027 is a deficient number, since it is larger than the sum of its proper divisors (235956549).

428217027 is a wasteful number, since it uses less digits than its factorization.

428217027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2913058 (or 2913051 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 428217027 is about 20693.4053988221. The cubic root of 428217027 is about 753.7395614725.

The spelling of 428217027 in words is "four hundred twenty-eight million, two hundred seventeen thousand, twenty-seven".