428734461 has 4 divisors (see below), whose sum is σ = 571645952. Its totient is φ = 285822972.

The previous prime is 428734459. The next prime is 428734483. The reversal of 428734461 is 164437824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 428734461 - 2¹ = 428734459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428734261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71455741 + ... + 71455746.

It is an arithmetic number, because the mean of its divisors is an integer number (142911488).

Almost surely, 2^428734461 is an apocalyptic number.

It is an amenable number.

428734461 is a deficient number, since it is larger than the sum of its proper divisors (142911491).

428734461 is a wasteful number, since it uses less digits than its factorization.

428734461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142911490.

The product of its digits is 129024, while the sum is 39.

The square root of 428734461 is about 20705.9040131070. The cubic root of 428734461 is about 754.0430318064.

The spelling of 428734461 in words is "four hundred twenty-eight million, seven hundred thirty-four thousand, four hundred sixty-one".