428217430 has 8 divisors (see below), whose sum is σ = 770791392. Its totient is φ = 171286968.

The previous prime is 428217397. The next prime is 428217431. The reversal of 428217430 is 34712824.

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

It is a junction number, because it is equal to n+sod(n) for n = 428217392 and 428217401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428217431) 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, 21410862 + ... + 21410881.

It is an arithmetic number, because the mean of its divisors is an integer number (96348924).

Almost surely, 2^428217430 is an apocalyptic number.

428217430 is a deficient number, since it is larger than the sum of its proper divisors (342573962).

428217430 is a wasteful number, since it uses less digits than its factorization.

428217430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42821750.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 428217430 is about 20693.4151362215. The cubic root of 428217430 is about 753.7397979234.

It can be divided in two parts, 4282 and 17430, that added together give a palindrome (21712).

The spelling of 428217430 in words is "four hundred twenty-eight million, two hundred seventeen thousand, four hundred thirty".