428734911 has 8 divisors (see below), whose sum is σ = 623614464. Its totient is φ = 259839320.

The previous prime is 428734879. The next prime is 428734919. The reversal of 428734911 is 119437824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 428734911 - 2⁵ = 428734879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 428734911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428734919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6495951 + ... + 6496016.

It is an arithmetic number, because the mean of its divisors is an integer number (77951808).

Almost surely, 2^428734911 is an apocalyptic number.

428734911 is a deficient number, since it is larger than the sum of its proper divisors (194879553).

428734911 is a wasteful number, since it uses less digits than its factorization.

428734911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12991981.

The product of its digits is 48384, while the sum is 39.

The square root of 428734911 is about 20705.9148795700. The cubic root of 428734911 is about 754.0432956210.

The spelling of 428734911 in words is "four hundred twenty-eight million, seven hundred thirty-four thousand, nine hundred eleven".