428507049 has 8 divisors (see below), whose sum is σ = 604951200. Its totient is φ = 268867136.

The previous prime is 428507041. The next prime is 428507063. The reversal of 428507049 is 940705824.

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 428507049 - 2³ = 428507041 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 428506998 and 428507016.

It is not an unprimeable number, because it can be changed into a prime (428507041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4200999 + ... + 4201100.

It is an arithmetic number, because the mean of its divisors is an integer number (75618900).

Almost surely, 2^428507049 is an apocalyptic number.

It is an amenable number.

428507049 is a deficient number, since it is larger than the sum of its proper divisors (176444151).

428507049 is a wasteful number, since it uses less digits than its factorization.

428507049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8402119.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 428507049 is about 20700.4118074979. The cubic root of 428507049 is about 753.9096868284.

The spelling of 428507049 in words is "four hundred twenty-eight million, five hundred seven thousand, forty-nine".