428060789 has 16 divisors (see below), whose sum is σ = 473867520. Its totient is φ = 384246720.

The previous prime is 428060761. The next prime is 428060791. The reversal of 428060789 is 987060824.

It is not a de Polignac number, because 428060789 - 2²⁴ = 411283573 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428060749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65699 + ... + 71919.

It is an arithmetic number, because the mean of its divisors is an integer number (29616720).

Almost surely, 2^428060789 is an apocalyptic number.

It is an amenable number.

428060789 is a deficient number, since it is larger than the sum of its proper divisors (45806731).

428060789 is a wasteful number, since it uses less digits than its factorization.

428060789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6380.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 428060789 is about 20689.6299870249. The cubic root of 428060789 is about 753.6478812579.

The spelling of 428060789 in words is "four hundred twenty-eight million, sixty thousand, seven hundred eighty-nine".